Musculoskeletal/Upper Limb/Lower Limb Anatomy Flashcards

1
Q

Describe the Trunk/Torso

A

The central region of the body.
Includes thorax, abdomen and pelvis
Doesn’t include neck,head or any of the upper or lower limbs

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2
Q

Describe the thorax?

A

The thorax is the upper part of the trunk/torso
This is from the bottom of the neck to the diaphragm.
The organs found within are the lungs and heart protected by the ribs.
Chest is the term to describe the front of the thorax

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3
Q

Describe the abdomen?

A

This is the central part of the trunk/torso
Between the diaphragm and the top of the pelvic bone
Holds most of the digestive Tract such as the stomach, intestines both small and large and liver.

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4
Q

Describe the pelvis?

A

This is the lowest part of the trunk/torso
From the lower abdomen to the start of the lower limbs
Contains the last of the digestive tract, bladder and all reproductive organs.
The bony ring structure is also called the pelvis

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5
Q

Describe the back?

A

The back anatomically is used to refer to the whole posterior surface of the trunk/torso

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6
Q

Describe the arm?

A

The arm is an anatomical term used to describe the upper section of the upper limb, this is from the shoulder to the elbow.
This is where the bicep muscle can be found

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7
Q

Describe the forearm?

A

The forearm is an anatomical term used to describe the middle/lower portion of the upper limb from the elbow to the wrist

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8
Q

Describe the Thigh?

A

The thigh is the anatomical term for the upper portion of the lower limb from the pelvis to the knee

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9
Q

Describe the Leg?

A

The leg is an anatomical term for the middle/lower portion of the lower limb from the knee to the ankle

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10
Q

What is the anatomical position?

A

The anatomical position is when a person is standing up, feet flat on the floor, facing forward, arms by their sides with the palms facing forwards

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11
Q

Superior meaning with example

A

ABOVE
Eg- The brain is superior to the heart

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12
Q

Inferior
Meaning and example

A

BELOW
Eg- the pelvis is inferior to the thorax

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13
Q

Anterior
Meaning and example

A

Anterior also known as Ventral= Front/ in front of
Eg- the nose is anterior to the ears

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14
Q

Posterior
Meaning and example

A

Posterior also known as Dorsal= Back/Behind
Eg- The spine is posterior to the sternum

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15
Q

Medial
Meaning and example

A

Close to the midline
Eg- The big to is medial to the little toe

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16
Q

Lateral
Meaning and example

A

Further away from the midline
Eg- The thumb is lateral to the palm

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17
Q

Proximal
Meaning and example

A

Closer to the origin
Eg- the elbow is proximal to the wrist

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18
Q

Distal
Meaning and example

A

Further away from the origin
Eg- the toes are distal to the knee

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19
Q

Ipsilateral
Meaning and example

A

The same side of the body
Eg- the right arm and the right leg are ipsilateral to each other

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20
Q

Contralateral
Meaning and example

A

The opposite side of the body
Eg- The right arm and the left leg are contralateral to each other

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21
Q

Deep
Meaning and example

A

Further away from the surface
Eg- the heart is deep to the sternum

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22
Q

Superficial
Meaning and example

A

Closer to the surface
Eg- The skin is superficial to muscle

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23
Q

Supine (position)
Meaning and example

A

Lying down, flat on the back, facing up

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24
Q

Prone (position)
Meaning and example

A

Lying down, on front, face down

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25
Cranial Meaning and example
Towards the head Eg- the brain is cranial to the spinal coard
26
Caudal Meaning and example
Towards the tail Eg- the pelvis is caudal to the abdomen
27
Rostral Meaning and example
Towards the face Eg- the frontal lobe is rostral to the occipital lobe
28
Coronal Plane
Also known as frontal Face on- this plane cuts into anterior and posterior
29
Sagittal Plane
Side on- cuts into left and right Parasagittal= cut in sagittal plane but parallel to the midline (off to one side or the other)
30
Axial plane
Also known as transverse or horizontal End on- cuts into superior and inferior
31
Axial skeleton
Central/core parts Eg- skull, vertebral column, ribs and sternum
32
Appendicular skeleton
The bones of the limbs Includes- Scapular, clavicle and the pelvic girdle
33
What is the skeleton?
The skeleton is split into 2 sub-divisions, the axial and appendicular. The skeleton is bony scaffolding, made up of bone and cartilage. The bone is hard and rigid, whereas cartilage is more flexible. When babies are bone most of their skeleton is made of cartilage which over time ossifies to bone. Some will remain as cartilage such as the anterior of the ribs
34
What is a joint
A joint is where two bones meet and articulate with each other Eg- the femur and tibia, articulate at the knee joint
35
SYNOVIAL JOINTS
Most common type of joint A narrow cavity separates both articulate surfaces of the bones. The cavity contains lubricating synovial fluid which is enclosed in a joint capsule. The joint capsule consists of 2 layers- an outer fibrous capsule and an inner synovial membrane. Each surface which articulate are covered with a articular hyaline cartilage. Synovial joints usually allow a great deal of movement EG- shoulders, knee and wrist.
36
FIBROUS JOINTS
These joints connect via strong fibrous tissue. No cavity or fluid like with synovial joints. These have very little movement Eg- sutures between the individual bones in the skull
37
CARTILAGINOUS JOINTS
These joints are like fibrous joints, but instead are separated by cartilage instead of fibrous tissue. There are 2 subtypes - Primary cartilaginous joints which are connected by hyaline cartilage allowing some flexibility eg- where ribs meet sternum - Secondary cartilaginous joints which are connected by fibrocartilage and a layer of hyaline cartilage. These type are flexible but strong so can support a lot of weight. Eg- intervertebral discs between vertebrae and the spine.
38
BALL AND SOCKET JOINT
The end of one bone is shaped as a ball and the other is the shape of a bowl. This means the ball fits inside the bowl, eg-shoulder joint. These joints are mobile and can allow a significant range of movement in many directions including rotation. The stability and mobility of these joints all depends on the fit of the socket. The better fit the more stable the joint is but less mobile. The poorer the fit the less stable the joint is bout with better mobility so from these have an increased risk of dislocation.
39
HINGE JOINT
This joint acts like the hinge on a door, the joint allows for a range of movement, but only in one plane eg-elbow or knee
40
PIVOT JOINT
This is the joint found at the top of the spine where the first and second vertebrae articulate. The first vertebrae at the base of the skull pivots around the peg of the second vertebrae which allows rotational movement allowing us to turn our head left and right.
41
SADDLE JOINT
These joints are shaped like a rider sat in a saddle. This joint permits movement in 2 planes. Eg the joint at the base of the thumb where the metacarpal of the thumb articulates with one of the small carpal bones. This is the carpometacarpal joint of the thumb
42
CONDYLOID JOINT
This joint is like a ball and socket joint but the two surfaces of the bone are oval-shaped. These have a good range of movement but only in 2 planes. Eg- the wrist joint and the metacarpophalangeal joint of the fingers or the knuckles
43
PLANE JOINT
This joint is where the articulating surfaces are almost flat which glide against each other. The movement from these is usually limited and is dictated by neighbouring bones and ligaments. Eg- joints between the small bones of the wrist and the acromioclavicular joint at the top of the shoulder.
44
What is a ligament?
A ligament is a band of connective fibrous tissue that attaches bones, to bones. They are used to stabilise joints and limit the movement. Ligaments can stretch over time, which in turn over time can provide greater joint mobility. The term double jointed actually means they have ligaments which are stretchy enough to allow more movement and is known as hyper mobility.
45
What is a sprain?
A sprain occurs when a ligament becomes overstretched and injured. The most often sprained ligament are those within the ankle cause by one going over on the ankle causing forced excessive inversion. The over stretched and torn ligaments can be painful and as so may never return to their original shape.
46
What happens to a ligament when a joint dislocates?
When a joint dislocates the ligament will be stretched. It may become so over stretched that it will be permanently lax leading to joint instability and so regular or recurrent dislocation may occur.
47
Flexion
Bending Decreasing the angle between 2 parts
48
Extension
Straightening Increasing the angle between 2 parts
49
Lateral flexion
Bending sideways Unique to the vertebral column
50
Abduction
Movement from midline
51
Adduction
Movement towards the midline
52
Internal Rotation
Rotating towards the midline
53
External rotation
Rotating away from the midline
54
Pronation
Unique to forearm Internal rotation of the radius- means palms face posteriorly
55
Supination
Unique to the for forearm- external rotation of the radius so the palms face anteriorly eg-anatomical position
56
Opposition
Unique to thumb and little finger- flexion and rotation so that the thumb and little finger can reach each other
57
Circumduction
Combination of flexion, extension, abduction and adduction. Such that the appendage traces a circular or conical pattern
58
Dorsiflexion
Unique to the ankle- the foot and toes move superiorly towards the shin
59
Plantarflexion
Unique to the ankle- the foot and toes move inferiorly- pointing toes down
60
Inversion
Unique to the foot and ankle- medial flexion so that the sole of the foot faces medially
61
Eversion
Unique to the foot and ankle- lateral flexion so that the sole of the foot faces laterally
62
Protraction
Unique to the scapula and mandible- moving the scapula or mandible anteriorly- eg moving the upper limb out in front as is pushing open a door
63
Retraction
Unique to the scapula and mandible- moving the scapula or mandible posteriorly- eg squaring the shoulders
64
Elevation
Unique to the scapula and mandible- moving the scapula or mandible superiorly eg- shrugging the shoulders or closing the mouth
65
Depression
Unique to the scapula and mandible- Moving the scapula or mandible inferiorly eg- returning the shoulders after elevation, opening the mouth
66
Skeletal muscle
Found throughout the body Provide support, aid movement for joints and soft tissues eg- eyeball They are under voluntary control which means we can consciously control them They are striated in appearance
67
Smooth muscle
Muscle which is located in walls of the bloody vessels and internal organs eg- intestines This muscle is involuntary and is controlled via the autonomic nervous system We are unable to control Not striated in appearance
68
Cardiac muscle
Muscle which is unique to the heart They are involuntary controlled. The muscle cells contact in response to the electrical impulses which are spontaneously generated by specialised cells within the heart. The autonomic nervous system influences the cells and can either speed up or slow down the heart rate. They are striated in appearance
69
Tendons
Tendons are composed of strong connective tissue which allows skeletal muscle to be attached to bone/soft tissue. The tendons are of a rounded shape like a cord but some form thin flat sheets known as aponeuroses such as in the scalp and abdominal wall. The muscle between the tendons is off ten referred to as the muscle belly
70
How does skeletal muscle move
For them to move joints, muscles or tendons must cross them. When a muscle contracts on of its attachments must move while its second attachment does not. The bone or part that doesn’t move is called the origin and the attachment that does move is called the insertion.
71
PARALLEL Skeletal muscle
The fibres within this type of skeletal muscle are aligned parallel to each other. They can shorten significantly and quickly but are less powerful than pennate muscles. There are 2 sub-types of parallel skeletal muscle - Fusiform= these muscles often have a long tendon at each end along with the muscle belly bulging out in the middle eg- biceps brachii - Strap= these muscles are belt shaped and relatively uniform in width at the belly eg-sartorius in the thigh
72
CONVERGENT Skeletal muscle
These muscles are fan shaped which very broad attachments at one end. Fibres converging onto much smaller attachment at the other end. Eg- pectoralis major on the anterior chest wall
73
CIRCULAR Skeletal muscle
Within this muscle the fibres are arranged in concentric rings around a structure and often are called sphincters. When they contract they close the aperture they surround. Eg- muscles around lips and eyes
74
PENNATE Skeletal muscle
The fibres are arranged at an angle to the direction in which the muscle acts. They cannot shorten as much as parallel but they are powerful, there are 3 subtypes - Unipennate= the fibres arranged diagonally in relation to the tendon and insert onto one side of the tendon only eg- extensor digitorum longus in the leg - Bipennate= the fibres are arranged in a V-shape and insert onto both sides of the tendon eg- recuts remoris in the thigh - Multipennate= these look like multiple bipennate muscles side by side eg- deltoid in the shoulder.
75
What is a motor unit?
A motor unit is composed of a single motor neuron, its axon and the muscle fibres it supplies. There can be great variation in the size of motor units. In the small muscles that move the eyeball, a single motor nerve axon may only supply just a few muscle fibres, allowing fine control of eye movement. In contrast in the thigh muscles a motor unit may comprises thousands of muscle fibres giving the muscle power but less precision.
76
What does the upper limb consist of
The arm, forearm and Hand
77
What does the lower limb consist of?
The thigh, leg and foot
78
What is the gross anatomy of the upper and lower limbs
- A ball and socket joint where limbs meet the trunk/torso -one large bone in the proximal - one hinge joint that separates the proximal and middle parts - two bones in the middle part - A collection of smaller bones at the start of the sitar part -five digits -One digit considerably larger - most of the muscle mass concentrated proximally
79
How has the upper limb evolved for dexterity?
The upper limb has evolved for dexterity and therefore is more mobile by - the shoulder joint has only a shallow socket and lax ligaments which allow for a wider range of movement for positioning the hand -the fingers/digits are long able to perform complex movements
80
How has the lower limb evolved for bipedal locomotion and to support body weight?
-The hip joint has a deep socket with strong ligaments so its stable but less mobile than that of the shoulder joint - the foot and toes are adapted for weight-bearing rather than dexterity
81
The Vertebral Column
The vertebral column also known as spine or spinal column, spans from the base of the skull to the cocoyx. The spine supports the head, neck and trunk/torso, protects the spinal cord, provides attachments for muscles and allows movement. There are 33 vertebrae found in the vertebral column which are split into 5 sections - Cervical= 7 vertebrae in the neck C1-7 - Thoracic= 12 vertebrae in the thorax T1-12 - Lumbar= 5 vertebrae in the abdomen L1-5 - Sacral= 5 vertebrae in the pelvis S1-5 which are fused to the sacrum - Coccygeal= 4 vertebrae in the pelvis Co1-4 which are fused to the cocccyx The vertebral column is not straight instead curved which helps to absorb shock. The cervical and lumbar segments curve anteriorly, forming a cervical lordosis and lumbar lordosis. The thoracic and sacral segments curve posteriorly forming a thoracic kyphosis and sacral kyphosis
82
How are vertebrae in the vertebral column connected
Small synovial facet joints, intervertebral discs and several groups of ligaments connect all vertebrae to each other
83
What do intervertebral discs do between vertebrae
Intervertebral discs between vertebrae support the weight of the upper body and absorb shock
84
What are distinguishing features of the cervical vertebrae
Cervical vertebrae have bifid spinous processes, holes in the transverse processes and oval shaped bodies. The first two are uniquely modified for rotation of the head.
85
What are the distinguishing features of Thoracic vertebrae
The thoracic vertebrae have long sharp, downward-sloping spinous processes that overlap the vertebrae below. Additional articular facets for the attachment of ribs and heart shaped bodies
86
What are the distinguishing features of the lumbar vertebrae
The lumbar vertebrae are short, blunt, spinous processes and extra large oval-shaped bodies to support the weight of the body.
87
What are the distinguishing features of sacral vertebrae
Sacral vertebrae are fused into the sacrum, a triangular-shaped bone that sits in the posterior midline. It articulates with the left and right hip bones to form the bony pelvis
88
What are the distinguishing features of the coccygeal vertebrae
The coccygeal vertebrae are fused to form the coccyx which is a vestigial remnant of what used to be a tail
89
What are we taking about in terms of the pectoral girdle
This describes the clavicle, the scapula and the muscles which attach to these bones
90
When taking about the arm, what are we talking about
The arm is the region between the shoulder and the elbow joints. The arm contains the humerus along with anterior and posterior muscle compartments
91
When taking about the forearm what are we talking about
This is the region between the elbow and the wrist joint The bones of the forearm are the radius and the ulna with anterior and posterior muscle compartments
92
When when talking about the hand what are we talking about
The hand lies distal to the wrist. The hand is spoken about in terms of the palm and the dorsal
93
What is the glenohumeral joint What type of joint is it How is it formed How mobile is this joint
The shoulder joint This is a synovial ball and socket joint This is formed by the articulation between the scapula and the proximal humerus Highly mobile
94
What does the elbow joint allow for What type of joint is this How is it formed
It allows flexion and extension of the forearm It is a synovial hinge joint It is formed by the articulation of the distal humerus with the ulna and radius
95
What type of joints are the proximal and distal radioulnar joints What do these joints allow
These are synovial joints They allow for pronation and supination of the forearm and hand
96
What is the radiocarpal joint What type of joint is this How is it formed What does this joint allow
The wrist joint Synovial joint Formed by the articulation between the distal radius and the two carpal bones of the wrist This allows for flexion, extension, abduction and adduction
97
What is the anterior movement of the pectoral girdle called with an example
Protraction We do this when we reach out our arm to open a door
98
What is the posterior movement of the pectoral girdle called and give an example
Retraction Squaring the shoulders
99
What movements can be done via the shoulder joint
Flexion, extension, abduction, adduction, medial rotation, lateral rotation and circumduction.
100
What movements can be seen with the elbow joint
Flexion and extension
101
What movements can be observed with the radioulnar joint
Pronation and supination
102
What movements can be seen from the wrist joints
Flexion, extension, abduction, adduction
103
What movements can be seen from the fingers
Flexion, extension, adduction, abduction
104
What does the clavicle articulate with
The clavicle articulates with the sternum at the medial end via the sternoclavicular joint The clavicle articulates with the acromion of the scapula at the lateral end via the acromioclavicular joint Both joints are synovial
105
What is the clavicle for
The clavicle holds the limbs away from the trunk so that they can move freely
106
What is the posterior surface of the scapula like
The posterior surface bears a ridge of bone called the spine which is usually easily palpable
107
Where is the acromion found
The lateral end of the spine expands to form the acromion which articulates with the lateral end of the clavicle
108
What forms the pectoral girdle
The clavicle, the scapula and the associated muscles
109
What is the glenoid fossa
This is the shallow fossa on the lateral aspect of the scapula
110
What does the glenoid fossa articulate with
The glenoid fossa articulates with the proximal humerus to form the should joint
111
What is the shoulder joint also known as
The glenohumeral joint
112
Why is the shoulder joint an unstable joint
The glenoid fossa is shallow making it a poor fit for the humerus to fit into, this increases the range of movement that the shoulder can do and so compromises the stability of the joint
113
What can be found superior and inferior to the glenoid fossa
2 small projections of bones known as the supraglenoid tubercle and the infraglenoid tubercle
114
Why are the supraglenoid and infraglenoid tubercles important for
Muscle attachements
115
What is the humerus
The long bone of the arm
116
What does the head of the humerus articulate with
The glenoid fossa of the scapula
117
What is the anatomical neck
This is the groove in the head of the humerus
118
What is the greater tubercle
This si a projection of bone off the proximal humerus
119
What is the greater tubercle important for
Muscle attachements
120
What is the surgical neck
This is where the bone of the humerus narrows and becomes continuous with the shaft just distal to the tubercles
121
Why is the surgical neck clinically important
This area is commonly fractured especially seen in the elderly when they fall and because the axillary nerve runs close to the region and can be injured by any fractures of the surgical neck or dislocations of the humeral head
122
What is the deltoid tuberosity
This is a slight pro tuba c4 of the humeral shaft on the upper lateral aspect
123
What is the deltoid tuberosity for
For the deltoid muscle to attach to
124
What is the radial groove
This is a groove which marks the path of the radial nerve over the posterior aspect of the upper part of the humeral shaft
125
Why can the radial nerve become injured
The radial nerve runs very close to the humerus and so can be injured in mid-shaft humeral fractures
126
Where is the scapula found
On the posterior chest wall
127
What are the movements of the scapula With examples
Protraction- extend the arm out to push open a door Retraction- squaring the shoulders Elevation- shrugging the shoulders Depression- lowering the shoulders Rotation- this tilts the glenoid fossa cranially to aid elevation of the upper limb
128
Why is rotation of the scapula important
When raising the arm above the head for every 2 degrees of abduction of the shoulder the scapula rotates 1 degree
129
What determines the direction in which the scapula can move when muscles contract
The attachments points of the muscles and the orientation of the muscle fibres
130
What is the key muscle involved in protraction
Serratus anterior
131
What are the 2 large superficial muscles of the posterior pectoral girdle
The trapezius The latissimus dorsi
132
Where does the trapezius and latissimus dorsi attach to
They have extensive attachments to the vertebral column
133
Does the latissimus dorsi attach to the scapula
No it doesn’t, the latissimus dorsi attaches to the anterior aspect of the proximal humerus so it moves the shoulder joint rather than the scapula
134
Does the trapezius only attach to the vertebral column
No it attaches the the vertebral column and the skull
135
What 3 muscles attach the medial border of the scapula to the vertebral column
The lavator scapulae The rhomboid major The rhomboid minor
136
What movement os produced of the scapula when the trapezius contracts
Upper part- elevates Middle part- Retracts Lower part- Depresses, rotates the scapula
137
What movement is produced when the latissimus dorsi contracts
This extends, adducts and medially rotates the humerus
138
What movement is produced when the levator scapulae contracts
This elevates the scapula
139
What movement is produced when the rhomboid major contacts
It retracts the scapula
140
What movement is produced when the rhomboid minor contracts
It retracts the scapula
141
What is the origin of the trapezius
The skull, cervical and thoracic vertebrae
142
What is the insertion of the trapezius
Clavicle and scapula (spine and acromion)
143
What is the origin of the latissimus dorsi
Lower thoracic vertebrae
144
What is the insertion of the latissimus dorsi
The upper anterior of the humerus
145
What is the origin of the levator scapulae
Upper cervical vertebrae
146
What is the insertion of the levator scapulae
Medial border of the scapula
147
What is the origin of the rhomboid minor
C7 and T1
148
What is the insertion of the rhomboid minor
The medial border of the scapula
149
What is the origin of the rhomboid major
Thoracic vertebrae
150
What is the insertion of the rhomboid major
The medial border of the scapula
151
What are most of the muscles of the posterior pectoral region innervated by
By branches that arise from the brachial plexus
152
Which muscle of the posterior pectoral region isn’t innervated by nerve of the brachial plexus
The trapezius is not innervated by the brachial plexus but instead is innervated by the 11th cranial nerve known as the accessory nerve
153
What is the latissimus dorsi innervated by
The latissimus dorsi is innervated by a branch of the brachial plexus known as the thoracodorsal nerve
154
What six muscles attach the scapula to the humerus
Deltoid Supraspinatus Infraspinatus Subscapularis Teres minor Teres major
155
What are the 4 rotator cuff muscles
Supraspinatus Infraspinatus Subscapularis Teres minor
156
Where can the deltoid muscle found
The deltoid is the large muscle found over the lateral aspect of the shoulder
157
Where does the deltoid muscle attach to
The deltoid muscle attaches the humerus to the lateral part of the clavicle to the spine of the scapula
158
Where does the deltoid muscle insert
The deltoid muscle inserts onto the humerus at the deltoid tuberosity
159
What is the role of the deltoid muscle
It is a powerful abductor of the shoulder joint
160
Can the deltoid muscle initiate abduction
No the deltoid muscle cannot initiate abduction, another muscle initiates the first 20 degrees before the deltoid takes over
161
What does the deltoid muscle do to the shoulder joint
The anterior and posterior fibres of the deltoid muscle contribute to the flexion and extension of the shoulder joint
162
What is the deltoid muscle innervated by
It is innervated by a major branch of the brachial plexus called the axillary nerve
163
What can injury to the axillary nerve cause
Weakness and atrophy or even paralysis of the deltoid muscle which would impact the ability to move the shoulder joint
164
What is the origin of teres major
This muscle arises from the posterior aspect of the scapula
165
Where does teres major insert
Teres major inserts on the anterior aspect of the humerus
166
What movements can be made by the contraction of the teres major
Medial rotation and adduction of the shoulder joint
167
Where do the rotator cuff muscles attach
The rotator cuff muscles attach the scapula to the tubercles of the humerus
168
Where do the Supraspinatus, Infraspinatus and teres minor all originate
The origin of all 3 of these muscles is the posterior surface of the scapula
169
Where do the Supraspinatus, Infraspinatus and teres minor all insert
They all insert onto the greater tubercle
170
Where dose the tendons of the the Supraspinatus, Infraspinatus and teres minor fuse
All the tendons fuse with the fibrous capsule that surrounds the shoulder joint
171
What is the quadrilateral space
This is a square-shaped space bounded by the teres minor above, teres major below and the long head of the triceps medially and the surgical neck of the humerus laterally
172
What travels through the quadrilateral space
The axillary nerve travels through this space so it can enter the posterior scapula region and innervate the deltoid and teres minor
173
What is the origin of the Subscapularis
This muscle originates from the anterior surface of the scapula
174
Where does the subscapularis insert
This muscle inserts on the lesser tubercle of the humerus
175
What is the action of the deltoid muscle at the shoulder joint
Abduction beyond 20 degrees
176
Whar is the origin from the scapula of the deltoid muscle
The spine, acromion and clavicle
177
What is the insertion of the deltoid muscle on the humerus
The deltoid tuberosity
178
What is the action of the teres major at the shoulder joint
Medial rotation and adduction
179
What is the origin of the teres major from the scapula
The posterior surface, inferior part of the lateral border
180
What is the insertion of the teres major on the humerus
The anterior humerus
181
What is the action of the supraspnatus at the shoulder joint
The first 20 degrees of abduction
182
What is the origin of the supraspinatus from the scapula
The supraspinous fossa
183
What is the insertion of the supraspinatus on the humerus
The greater tubercle= superior facet
184
What is the action of the infraspinatus at the shoulder joint
Lateral rotation
185
What is the origin of the infraspinatus from the scapula
The infraspinous fossa
186
What is the insertion of the infraspinatus on the humerus
The greater tubercle= middle facet
187
What is the action of the teres minor at the shoulder joint
Lateral rotation
188
What is the origin of the teres minor from the scapula
The lateral border
189
What is the insertion of the teres minor on the humerus
The greater tubercle= inferior facet
190
What is the action of the subscapularis at the shoulder joint
Medial rotation
191
What is the origin of the subscapularis from the scapula
The Subscapular fossa
192
What is the insertion of the subscapularis on the humerus
The lesser tubercle
193
Why is supraspinatus clinically impaortant
This muscle is clinically important because as it travels from the suprasinous fossa to the greater tubercle it travels under the acromion. The tendon may become inflamed and pinched between the humerus and the acromion during movements of the shoulder. This is called impingement and patients would present with a painful arc
194
What allows for good range of movements at joints
The poor fit of articulating surfaces facilitated by loose joint capsules
195
What is the role of the rotator cuff muscles
They provide vital stability for the shoulder joint which compensates for the poor fitting articulating surfaces
196
What does contraction of the rotator cuff muscles do
Contraction of the rotator cuff muscles hold the head of the humerus in the shallow glenoid fossa
197
What is the glenoid labrum
This is a rim of fibrocartilage around the margin of the glenoid fossa to contribute to stability by deepening the shallow fossa
198
What is the inter muscular septa
This extends from the deep brachial fascia separating the arm into anterior and posterior compartments
199
What is the triceps brachii
This is a single large muscle that lies in the posterior compartment of the arm
200
What are characteristics of the triceps brachii
It has 3 muscle bellies/heads which all converge via a common tendon onto a single insertion point
201
What is the insertion point of the tricep brachii
The olecranon of the ulna
202
When the tricep brachii contacts what does this cause and why
When the tricep brachii contacts it causes the elbow to extend due to the muscle crossing the posterior aspect of the elbow joint
203
What are the names of the 3 heads of the tricep brachii
Long head Lateral head Medial head
204
Where does the long head of the tricep brachii originate from
The long head of the tricep brachii originates from the infraglenoid tubercle of the scapula and is the most medial part of the tricep
205
Where does the lateral head of the tricep brachii originate from
The lateral head originates from the posterior humerus proximal to the radial groove
206
Where does the medial head of the tricep brachii originate from
The medial head originates from the posterior humerus distal to the radial groove
207
Why can the long head of the tricep brachii contribute to extension of the shoulder joint
Due to its attachements to the scapula
208
What are all 3 parts o the tricep brachii innervated by
They are innervated by the radial nerve
209
Where does the radial nerve run
The radial nerve winds around the posterior aspect of the humerus in the radial groove between the medial and lateral heads of the tricep brachii
210
What is adhesive capsulitis
Frozen Shoulder
211
What is the main symptoms of adhesive capsulitis
Pain and stiffness in the shoulder
212
What is the cause of adhesive capsulitis
The capsule of the joint becomes inflamed, stiff and tight, adhesions may develop.
213
Who is more likely to get adhesive capsulitis
Middle age people more common with women and people who suffer with diabetes
214
What is the treatment for adhesive capsulitis
There is no cure for this but supportive treatments of physiotherapist is the main treatment but can take up to 3 years to resolve.
215
What can cause rotator cuff injury
Acute trauma or repetitive use but can also be cause due to degeneration of the muscles due to age
216
What happens if the supraspinatus tendon becomes injured
If this tendon becomes injured or inflamed it may become impinged between the acromion and the humeral head, this would mean that the first part of abduction would be normal but between 60 and 120 degrees of abduction the patient would experience pain, after 120 degrees the pain would subside this is what is known as a painful arc. If left untreated the inflamed tendon may rupture
217
What has happened if someone dislocated there shoulder
In a shoulder dislocation the humeral head moves out of the glenoid fossa
218
What type of dislocation Is most common of the shoulder
An anterior dislocation is most common and almost all dislocations will be anterior
219
What usually causes a dislocation to the shoulder
Blunt force trauma eg-fall
220
Why is a posterior dislocation usually missed
This is usually missed due to it been very uncommon
221
What causes a posterior shoulder dislocation
Usually associated with vigorous muscle contraction eg- epileptic seizure
222
What can a dislocation of the shoulder cause injury to
The axillary nerve
223
Why can the axillary nerve become injured
Because it lies close to the surgical neck of the humerus so can be injured by fractures in this region or dislocation of the shoulder
224
Why would injury to the axillary nerve cause weakness to the deltoid muscle
Injury to the axillary nerve can result in weakness or paralysis of the deltoid due to the motor fibres of the axillary nerve innervate the deltoid and teres minor, if this is injured this presents functionally as difficultly abducting the shoulder
225
What causes weaknesses of the tricep
The radial nerve travels along the radial groove of the posterior humerus. Fractures of the humeral shaft can injury the nerve. This can lead to weakness or paralysis of the muscles that are innervated by the radial nerve
226
What are the bony prominences called that expend dismally from the shaft
The medial and lateral epicondyles
227
Where are the trochlea and capitellum
There a prominences found on the distal humerus
228
What does the trochlea and capitellum articulate with
They articulate with the trochlear notch of the ulnar and the head of the radius at the elbow joint
229
What is the axilla
The armpit
230
What is the armpit
The space between the trunk and the upper arm
231
How many boundaries does the axilla have
6
232
What are the 6 boundaries of the axilla
Anterior wall Posterior wall Lateral wall Medial wall Apex Base
233
What makes up the anterior wall of the axilla
Pectoralis major and minor
234
What makes the posterior wall of the axilla
Subscapularis, teres major and latissimus dorsi
235
What makes up the lateral wall of the axilla
Upper humerus
236
What makes up the medial wall of the axilla
Serratus anterior and chest wall
237
What makes up the apex of the axilla
First rib, clavicle, scapula
238
What makes up the base of the axilla
Skin and fascia between the chest wall and arm
239
What does the axilla contain
Fat Lymph nodes Axillary artery Axillary vein Brachial plexus
240
How many groups of lymph nodes are found in the axilla
5 groups
241
What do the lymph nodes drain in the axilla
The lymph nodes in the axilla drain the upper limb, breast, chest wall, scapular region and the abdominal wall as far as the umbilicus
242
Where are the lymph nodes in the axilla located
They are located in the apex
243
What are the lymph nodes in the axilla also known as
The apical nodes
244
What are the lymph nodes usually involved in
They are usually involved in the spread of cancer due to them draining lymph from a large area
245
What type of cancer are the lymph nodes usually associated with
Breast cancer
246
What might be a first sign of breast malignancy
A lump in the armpit
247
What 2 things could a lump in the armpit mean
Infection Breast malignancy
248
What is the axillary artery a continuation of
The subclavian artery
249
What does the axillary artery become
The brachial artery
250
What does the axillary artery give rise to
The axillary artery gives rise to several branches above the pectoralis minor- 2 behind and 3 in front
251
When does the axillary artery become the brachial artery
The axillary artery becomes the brachial artery when it crosses the inferior border of the teres major
252
What is the axillary vein
This is a large vein which drains the upper limb
253
What is the axillary vein a continuation of
The axillary vein is a continuation of the subclavian vein
254
How is the axillary vein formed
The axillary vein is formed by the union of the deep veins of the arm with the basilic vein
255
Penetrating wounds of the axilla could be life-threatening, how can the bleeding be stopped here
Compressing the vessels against the humerus
256
What is the brachial plexus
This is a network of nerves that provides motor and sensory innervation to the upper limb
257
What is the brachial plexus formed by
The brachial plexus is formed by spinal nerves that leave the lower cervical spinal cord segments and the first thoracic spinal cord segment. These are spinal nerves C5,C6,C7,C8 and T1 Mixture of nerves which carry motor and sensory fibres
258
How many segments is the brachial plexus split into
5 segments
259
What are the 5 segments of the brachial plexus
Roots Trunks Divisions Cords Branches
260
What are the roots of the brachial plexus
The roots of the brachial plexus are the 5 spinal nerves C5-T1 that exit the spinal cord and collectively give rise to the brachial plexus These are found in the neck
261
Where is the trunks of the brachial plexus found
In the neck
262
What makes up the trunks of the brachial plexus
C5 and C6 combine to form the superior trunk C7 continues as the middle trunk C8 and T1 combine to form the inferior trunk
263
What are the divisions of the brachial plexus
Each trunk then divides into a posterior and anterior division under the clavicle
264
What are the cords of the brachial plexus
Anterior divisions of the superior and middle trunks combine to make the lateral cord Posterior divisions of all the trunks combine to make the posterior cord Anterior divisions of the inferior trunk continue as the medial cord
265
What branches of the brachial plexus are located in the axilla
Axillary branch Radial branch Musculocutaneous branch Ulnar branch Median branch
266
Where does the axillary branch arise from
The posterior cord
267
What does the radial branch arise from
The posterior cord
268
Where does the musculocutaneous branch arise from
The lateral cord
269
Where does the ulnar branch arise from
The medial cord
270
Where does the median branch arise from
They arise from the lateral and medial cords
271
As well as giving rise to the terminal branches in the axilla the different segments of the brachial plexus give rise to other nerves which innervate what
The shoulder and the pectoral muscles
272
What does the axillary nerve innervate
The deltoid and teres minor and small regions of the skin over the upper lateral arm
273
Where does the axillary nerve arise from
It is a branch of the posterior cord
274
What spinal nerves does the axillary nerve contain
C5 and C6
275
Where does the axillary nerve run
It runs close to the surgical neck of the humerus and is vulnerable to injury through fractures of the surgical neck or dislocations of the humeral head
276
What does the radial nerve innervate
It innervates the tricep in the posterior arm, and innervates all the muscles in posterior compartment of the forearm, these muscle are extensors of the wrist and digits
277
What is the radial nerve a continuation of
The radial nerve is a continuation of the posterior cord
278
What spinal nerves does the radial nerve contain
C5-T1
279
Where does the radial nerve run
It runs along the radial groove on the posterior surface of the humerus and is vulnerable to mid-shaft fractures
280
What does the musculocutaneous nerve innervate
The musculocutaneous nerve innervates the 3 muscles in the anterior arm
281
Where does the musculocutaneous nerve arise from
The musculocutaneous nerve arises from the lateral cord
282
What spinal nerves does the musculocutaneous nerve contain
C5-C7
283
What does the musculocutaneous nerve continue as
The musculocutaneous nerve continues as a sensory nerve that innervates a region of the skin over the forearm
284
What do the median and ulnar nerves innervate
These 2 nerves don’t innervate any muscles in the arm, these innervate muscles in the anterior forearm and hand
285
How is the median nerve is formed from the contribution of what
The median nerve is formed from the contributions from both the lateral and medial cords
286
What spinal nerves does the median nerve contain
C6-T1
287
What does the median nerve innervate
The median nerve innervates most of the muscles of the anterior forearm which are the flexors of the wrist and digits, along with innervation the small muscles of the thumb and the skin over the lateral aspects of the palm of the hand and over the lateral digits
288
Where is the median nerve at its most vulnerable
The median nerve is most vulnerable in the arm as it crosses the anterior aspect of the elbow known as the cubital fossa
289
How is the ulnar nerve formed
The ulnar nerve is formed by the continuation of the medial cord after it has given a contribution to the median nerve
290
What spinal nerves are found in the ulnar nerve
C8-T1
291
What does the ulnar nerve innervate
The ulnar nerve innervates most of the small muscles in the hand and is vital for fine movements of the digits. It also innervates skin over the medial aspect of the hand and medial digits
292
Where is the ulnar nerve most vulnerable
The ulnar nerve is most vulnerable to injury behind the medial epicondyle as it lies most superficially here
293
What is the most catastrophic type of brachial plexus injury
The most catastrophic brachial plexus injury occurs when all 5 roots of the brachial plexus are injured, this is uncommon but devastating as it effectively denervates the whole upper limb
294
What are the 3 muscles found in the anterior compartment of the arm
Biceps brachii Brachialis Coracobrachialis
295
What are are all 3 muscles in the anterior compartment of the arm
All 3 are flexors All 3 are innervated by the musculocutaneous nerve
296
What are the characteristics of the biceps brachii
Lies most superficially in the anterior arm 2 muscle bellies
297
What are the 2 muscle bellies of the bicep brachii
The long head The short head
298
Proximally what are both muscle bellies attached to
The scapula
299
Apart from the scapula what does the long head attach to
The supraglenoid tubercle
300
Apart fro the scapula what else does the short head attach to
The Coracoid process
301
What doe the 2 muscle bellies of the bicep brachii converge onto
The 2 muscle bellies converge via a common tendon onto the radial tuberosity of the radius
302
How does the long head of the bicep brachii help to stabilise the shoulder joint
The tendon of the long head of the bicep pierces the capsule of the shoulder joint to help and stabilise it
303
What type of muscle is the bicep
The bicep is a flexors of the elbow joint but because it crosses the shoulder joint it can contribute to flexion of the shoulder joint
304
Where is the brachialis located
The brachialis is located deep to the bicep
305
What does the brachialis attached to
The brachialis is proximally attached to the anterior aspect of the lower half of the shaft of the humerus
306
Where does the brachialis insert
The brachialis crosses over the the elbow joint and inserts distally upon the ulna tuberosity.
307
What type of muscle is the brachialis
The brachialis is a powerful flexor of the elbow joint
308
Where is the caracobrachialis found attached to
The coracobrachialis is a smaller muscle that attaches proximally to the coracoid process of the scapula and distally to the medial aspect of the middle part of the humerus
309
Where does the coracobrachialis cross over
The coracobrachialis crosses the shoulder joint and acts upon it as a weak flexor
310
What is the cubital fossa
The cubital fossa is a region anterior to the elbow joint
311
How many borders does the cubital fossa have
3
312
What were the 3 borders if of the cubital fossa
The lateral border The medial border The superior border
313
What is the lateral border of the cubital fossa made up of
The lateral border is formed by brachioradialis a posterior forearm muscle
314
What is the medial border of the cubital fossa made up of
The medial border is formed by the pronator teres which is an anterior forearm muscle
315
What is the superior border of the cubital fossa made up of
The superior border or base of the cubital fossa is formed by an imaginary line drawn between the medial and lateral epicondyles of the humerus
316
What is the apex of the cubital fossa
The apex is the most distal part of the cubital fossa and pointing towards the forearm and hand
317
Can the tendon of the bicep brachii found in the cubital fossa
The tendon of the bicep can be traced through into the cubital fossa as it travels to its insertion point on the radial tuberosity
318
What is the bicipital aponeurosis
This is a fascial extension of the biceps tendon
319
What is the role of the bicipital aponeurosis
It seperates the superficial veins from the deeper structures in the cubital fossa: the brachial artery and the median nerve
320
Where is the brachial artery located
The brachial artery lies medial to the biceps tendon
321
What does the brachial artery become
The brachial artery bifrucates into its terminal branches the radial and ulnar arteries in the cubital fossa
322
Where is the median nerve found
The median nerve lies medial to the brachial artery
323
Where is the radial nerve located
The radial nerve is found deep to the brachioradialis
324
Why are the superficial veins in the cubital fossa clinically important
The superficial veins are clinically important for venipuncture and intravenous access
325
When axillary lymph nodes are removed what 2 nerves could be at risk of injury
The long thoracic nerve The throacodorsal nerve
326
What does the long thoaracic nerve innervate
The serratus anterior
327
What would be caused by injury to the long thoracic nerve through axillary lymph node removal
Injury to this nerve causes weakness or paralysis of serratus anterior which would cause the scapula to appear raised up due to the medial border of the scapula not sitting flat on the posterior chest wall, this is known as winged scapula
328
Why is the throacodorsal nerve vulnerable to injury in the removal of the axillary lymph nodes
The thoracodorsal nerve to the latissimus dorsi is vulerable as it runs along the subscapularis muscle which forms the posterior wall of the axilla
329
Why is the ulnar nerve vulnerable to injury
The ulnar nerve is vulnerable to injury in the lower arm as it travels behind the medial epicondyle. If the medial epicondyle is fractured the nerve may be injured. Injury to this nerve can lead to motor impairment of the hand as it innervates most of the small muscles of the hand along with causing sensory impairment in the hand.
330
What is upper brachial plexus injury also known as
Erb’s palsy
331
What causes Erb’s palsy
This injury in uncommon. The upper parts of the brachial plexus are affected which can involve the C5-C6 or C5-C7 This injury occurs with paralysis of one of the lateral rotators of the shoulder and the extensors of the wrist, the affected limb will typically appear medially rotated and wrist flexed
332
What usually causes Erb’s Palsy
It it typically caused by trauma where the head is stretched away from the shoulder so typically seen when someone is thrown from a motorbike or horse or in newborns if a baby’s shoulder becomes stuck and the neck is extensively stretched
333
What is lower brachial plexus injury also known as
Klumpke’s Palsy
334
What is Klumpke’s Palsy
This is another uncommon injury where the lower parts of the brachial plexus are affected C8-T1 This is where the small muscles in the hand become paralysed
335
What causes Klumpke’s Palsy
It is typically caused by trauma where the arm is forcefully pulled upwards which stretches the nerves of the plexus Can be seen in babies during delivery if the arm is forcefully pulled
336
What is horners syndrome
Horners syndrome is seen through 3 main symptoms including drooping of the eyelid, constriction of the pupil and lack of sweating
337
What causes horners syndrome
It is caused when the sympathetic nerve supply to the face is interupted. T1 spinal nerve carries sympathetic fibres which are destined to supply the face but if an injury occurs in the brachial plexus to T1 horners syndrome would occur
338
What is a brachial plexus block
This is a form of regional anaesthesia which can be used as an alternative to general anaesthetic for surgery of the upper limb
339
How does a brachial plexus block work
The anaesthetic is injected via the help of ultrasound guidance around the nerves of the brachial plexus which anaesthetises the upper limb which is checked before surgery commences via tests of sensory and motor function
340
What are the 2 bones of the forearm
Radius Ulnar
341
How are the radius and ulnar bones connected in the forearm
They are connected by the interosseous membrane
342
What do the radius and ulnar articulate at there proximal ends
They articulate with the distal humerus at there proximal ends
343
What does the articulation of the ulnar and radius with the humerus form
The elbow joint
344
What does the trochlea notch of the ulnar articulate with
It articulates with the trochlea of the humerus
345
What does the radial head articulate with
It articulates with the capitellum of the humerus
346
What movements can occur at the elbow joint
Flexion and extension
347
Where do the radius and the ulnar articulate with each other
They articulate with each other at the radioulnar joints
348
What movements does the radioulnar joints allow for
Pronation and supination of the forearm and hand
349
What forms the radiocarpal joint
The radius articulates with 2 small bones of the wrist forming the radiocarpal joint
350
What movement is permitted at the radiocarpal joint
Flexion Extension Abduction Adduction
351
How many bones is the carpus made up of and how are they arranged
8 small bones which are roughly arranged in 2 rows one proximally and one distally
352
What bones does the distal radius articulate with in the carpal
The distal radius articulates with 2 bones in the proximal row of the carpal, the scaphoid and lunate, which forms the radiocarpal joint
353
What does the proximal row of the carpal bones consist of
Scaphoid Lunate Triquetral Pisiform
354
Which bone of the proximal row of the carpals isn’t considered as a true bone and why
The pisiform isn’t considered as a true bone but more of a small bone that develops in the tendon of the flexor carpi ulnaris
355
What does the distal row of the carpal consist of
Trapezium Trapezoid Capitate Hamate
356
What is the hook
A Bony prominent on the hamate which you can palpate
357
What is the most commonly fractured carpal bone
The scaphoid
358
How is the scaphoid bone most commonly fractured
Usually done by a fall onto an outstretched hand
359
Where are the metacarpals
They lie distal to the carpus
360
What are the bones of the digits
The phalanges
361
How many phalanges are in each finger and thumb
3 in each finger 2 in the thumb
362
What is the cubital fossa bound laterally and medially
The cubital fossa is bound laterally by the brachioradialis and laterally by the pronator teres
363
What is the superior border of the cubital fossa made up of
The superior border is formed by a line between the medial and lateral epicondyles of the humerus
364
What structures are found in the cubital fossa
Biceps tendon Median nerve Brachial artery = the radial and ulnar arteries Superficial veins
365
How many muscles make up the anterior compartment of the forearm
8 muscles which are arranged into 3 layers
366
What are the 3 muscle layers of the anterior compartment of the forearm called
Superficial Middle Deep
367
What are most of the 8 muscles of the anterior compartment of the forearm
Most of them are flexors
368
What nerve innervates most of the muscles in the anterior compartment of the forearm
Median nerve
369
How many muscles make up the superficial layer of the anterior compartment of the forearm
4 muscles
370
What are the 4 muscles of the superficial layer
Pronator teres Flexor carpi radialis Palmaris longus Flexor carpi ulnaris
371
Where do all the muscles in the superficial layer attach to proximally
They attach to the medial epicondyle of the humerus
372
What is the medial epicondyle of the humerus usually known as
Common flexor origin
373
What type of muscle is the pronator teres
It is a pronator
374
What movement does the flexor carpi radialis allow
Allows for flexion and abduction at the wrist
375
How can you easily recognise the palmaris longus
It has a small belly but is long and thin
376
Where does the palmaris longus insert onto
It inserts into the fascia of the palm of the hand
377
What movement does the flexor carpi ulnaris allow
Flexion and adduction of the wrist
378
What nerve innervates the flexor capri ulnaris
It is innervated by the ulnar nerve
379
What muscle forms the middle layer of the anterior compartment of the forearm
The flexor digitorum superficialis
380
How many tendons does the flexor digitorum superficialis give rise to
4 tendons
381
What is the function of the muscle, flexor digitiorum superficialis
It is a flexor of the digits
382
What nerve innervates the flexor digitorum superficialis
It is innervated by the median nerve
383
How many muscles make up the deep layer of the anterior compartment of the forearm
3 muscles
384
What 3 muscles of the anterior compartment of the forearm make up the deep layer
Flexor digitorum profundus Flexor pollicis longus Pronator quadratus
385
What is the function of the flexor digitorum profundus
It is a flexor of the digits
386
Where is the flexor digitorum profundus located
It lies deep to the flexor digitorum superficialis
387
How many tendons does the flexor digitorum profundus give rise to
It gives rise to 4 tendons
388
What nerve innervates the flexor digitorum profundus
The muscle is innervated by 2 nerves The lateral half of the muscle which gives rise to the tendons that travel to the index and middle fingers is innervated by the median nerve The medial Half of the muscle which gives rise to the tendons that travel to the ring and little fingers is innervated by the ulnar nerve
389
What is the function of the flexor pollicis longus
Flexion of the thumb
390
What is the deepest muscle of the forearm
The pronator of the quadratus
391
What is the function of the pronator quadratus
Pronation of the distal radioulnar joint
392
What is the carpal tunnel
It is a narrow passageway at the wrist
393
What makes up the floor and sides of the carpal tunnel
They are formed by the carpal bones
394
What is the flexor retinaculum
It is a fibrous band that completes the carpal tunnel forming the roof
395
What does the flexor retinaculum attach to laterally and medially
The flexor retinaculum attaches to the scaphoid and trapezium laterally The flexor retinaculum attaches to the hook of the hamate and the pisiform medially
396
What tendons pass through the carpal tunnel
The tendons of the flexor digitorum superficialis The tendons of the flexor digitorum profundus The tendons of the flexor pollicis longus
397
What nerve travels through the carpal tunnel
The median nerve
398
What would a patent with carpal tunnel syndrome usually present with
Impaired/altered sensation over the skin of the hand so they may experience tingling, numbness or pain Weakness of the hand muscles supplied by the median nerve so small muscles of the thumb
399
What can happen if carpal tunnel goes untreated
Thumb may atrophy and weakness may become permanent
400
How can carpal tunnel be treated
The flexor retinaculum is divided to alleviate pressure
401
Do the radial artery, ulnar artery and the ulnar nerve travel inside or outside the carpal tunnel
They travel outside the carpal tunnel
402
Where does the brachial artery bifurcate
The cubital fossa
403
What are the 2 terminal branches of the brachial artery
The radial artery and the ulnar artery
404
Where does the radial artery run
The radial artery runs along the lateral aspect of the forearm
405
Where can the redial artery be palpated
The wrist
406
Where does the ulnar artery travel
The ulnar artery runs down the medial aspect of the forearm
407
Where can the ulnar artery be palated
In the wrist
408
Why is the ulnar artery harder to palpate than the radial artery
It may be partially covered by the tendon of the flexor carpi ulnaris
409
What forms the palmar arches
Th radial and ulnar arteries pass into the hand and anastomoses in the hand to form the palmar arches
410
Why is the anastomose of the radial and ulnar arteries important
So that the hand remains adequately perfused in the event that one of the arteries becomes occluded or injured
411
What are the 2 different types of veins in the upper limb
Superficial and deep veins
412
Where does all venous blood of the upper limbs drain to
The axillary vein
413
What are the 2 important superficial veins
The cephalic vein and the basilic vein
414
Where does the cephalic vein run
The cephalic vein runs laterally in the forearm
415
Where does the basilic vein run
It runs medially in the forearm
416
How and where are the cephalic and basilic veins connected
They are connect in the cubital fossa via the median cubital vein
417
What are the superficial veins important for
Commonly used for venepuncture and intravenous access
418
What forms the axillary vein
The basilic vein recieves deep veins of the arm to form the axillary vein
419
How many bones make up the carpus
The carpus is comprised of eight small bones
420
How are the bones of the carpus arranged
They are arranged into two rows of 4 bones One proximal and one distal
421
What bones of the carpus articulate with the distal radius
The scaphoid and the lunate
422
What is the joint formed by the distal radius and the carpal bones
Radiocarpal joint
423
What is the most commonly fractured carpal bone
The scaphoid bone
424
Even though dislocation of the lunate bone in the carpal is rare why is it very important not to rule it out
It is very important not to miss an anterior dislocation of the lunate bone as it can compress the median nerve
425
Where are the metacarpals found
The metacarpals lie distal to the carpus
426
What are the bones of the digits called
Phalanges bones
427
How many phalanges bones are in each digit
3 phalanges in each digit apart from the thumb which has 2
428
Where are the carpometacarpal joints
They are found between the distal row of carpal domes and the proximal part of the metacarpals
429
Where are the metacarpophalangeal joints found
They are found between the distal parts of the metacarpals and the proximal phalanges
430
Where are the interphalangeal joints found
Between the bones of the phalanges
431
What is the power grip good for
To hold or squeeze objects tightly
432
What is the hook grip important for
Carrying objects with handles
433
What is the precision grip important for
It allows us to hold objects between the pads of our thumb and index finger
434
What movements are able at the fingers
Flexion Extension Abduction Adduction
435
What movements are able at the thumb
Flexion Extension Abduction Adduction Opposition
436
How are movements of the fingers and thumb controlled
They are controlled by both extrinsic and intrinsic muscles
437
Where are the extrinsic muscles that control the fingers and thumb are found where
They are found in the anterior and posterior forearm where there tendons travel into the hand
438
Where are the intrinsic muscles found
They are found in the hand
439
What muscles of the anterior forearm that are prime flexors of the wrist
Flexor carpi radialis Flexor carpi ulnaris Palmaris longus
440
Where does flexor carpi radialis insert onto
It inserts onto the 2nd metacarpal
441
Where does the flexor carpi ulnaris insert onto
It inserts onto the 5th metacarpal
442
What does the palmaris longus insert onto
It inserts onto the palmar fascia
443
What muscles travel through the carpal tunnel that flex the digits
Flexor digitorum superficialis Flexor digitorum profundus Flexour pollicis longus
444
Where does the tendon of the flexor digitorum superficialis insert onto
The tendon of the flexor digitorum superficialis splits into two which then inserts on either side of the middle phalanx of digits 2 to 5
445
Where does the tendon of the flexor digitorum profundus insert onto
The tendon of the flexor digitorum profundus passes through the slit of the flexor digitorum superficialis to insert onto the palmar aspect of the distal phalanx of digits 2 to 5
446
What does the tendon of the flexor pollicis longus insert onto
It inserts onto the distal phalanx of the thumb
447
What encloses the flexor tendons
Fibrous sheaths
448
What is the function of the fibrous sheaths that enclose the tendons
They maintain the positions of the tendons in the middle of each fingers
449
What helps to reduce friction between the fibrous sheaths and the tendons
A synovial sheath which reduces friction and allows the tendons to slide freely within the fibrous sheath during flexion and extension
450
What is tenosynovitis
If a penetrating injury occurs of the hands and fingers including lacerations and thorns which pierce the skin and so in turn pierce the tendon sheath and so may become infected causing inflammation of both the tendon and the sheath which is known as tenosynovitis
451
What protects the long flexor tendons, tendon sheaths and vessels in the central palm
The palmar aponeurosis
452
What are the intrinsic muscles of the hand also known as
The small muscles of the hand
453
Where do the intrinsic muscles of the hand originate and insert
They have both their origins and insertions in the hand itself
454
How many groups of intrinsic muscles are there
4 groups
455
What are the 4 groups of intrinsic muscles
Thenar eminence Hypothenar eminence Lumbricals Interossei
456
How many muscles are in the thenar eminence group
3 muscles
457
How many muscles are part of the hypothenar eminence group
3 muscles
458
How many muscles are part of the lumbricals group
4 muscles
459
How many muscles are part of the interossei group
7 muscles
460
What is the intrinsic muscle of the thumb called
Adducts pollicis
461
What nerves innervate the intrinsic muscles of the hand
The ulnar and median nerves
462
What is the thenar eminence
This is the fleshy mass on the palm of the hand at the base of the thumb and contains 3 muscles which act upon the thumb
463
What are the 3 muscles of the thenar eminence
Flexor pollicis brevis Abductor pollicis brevis Opponents pollicis
464
Where does the opponens pollicis lie
The opponens pollicis lies deep to the flexor and abductor muscles
465
Where does the flexor pollicis brevis insert onto and what is it innervated by
The flexor pollicis brevis inserts onto the proximal phalanx and is innervated by the recurrent branch of the median nerve
466
Where does the abductor pollicis brevis insert onto and what is it innervated by
The abductor pollicis brevis inserts onto the proximal phalanx lateral aspect and is innervated by the recurrent branch of the median nerve
467
What does the opponens pollicis insert onto and what is it innervated by
The opponens pollicis inserts onto the 1st metacarpal and is innervated by the recurrent branch of the median nerve
468
Where does the recurrent balance of the median nerve leave the median nerve from
The recurrent branch of the median nerve leaves the median nerve after it travels through the carpal tunnel
469
Why are the thenar eminence muscles affected by carpal tunnel syndrome
They are affected by carpal tunnel syndrome because they are innervated by the recurrent branch of the median nerve which is a branch of the median nerve which branches after the carpal tunnel so if this get pinched the recurrent branch would be affected
470
Why does the adductor pollicis not fall into the thenar eminence group of muscles
It lies deep in the Palm not in the thenar eminence and it is innervated by the ulnar nerve
471
Where does the adductor pollicis attach to
It attaches to the 3rd metacarpal and the proximal phalanx of the thumb
472
What grip are the thenar muscles important for
The precision grip
473
What is the hypothenar eminence
This is the fleshy mass on the medial side of the palm of the hand proximal to the little finger which contains 3 muscles which act upon the little finger
474
What are the 3 muscles part of the hypothenar eminence
Flexor digiti minimi Abductor digiti minimi Opponens minimi
475
Where do the hypothenar muscles attach to
They attach to the proximal carpal bones
476
Where does the flexor digiti minimi insert onto and what is it innervated by
It inserts on the proximal phalanx and is innervated by the deep muscle of the ulnar nerve
477
Where does the abductor digiti minimi insert onto and what is it innervated by
It is inserted onto the proximal phalanx and is innervated by the deep branch of the ulnar nerve
478
Where does the opponens digiti minimi insert onto and what is it innervated by
It inserts onto the 5th metacarpal and is innervated by the deep branch of the ulnar nerve
479
How many lumbrical muscles are there
There are 4 lumbrical muscles one for each finger
480
Where do the lumbricals arise from, where do they travel and where do they insert
They arise from the tendons of the flexor digitorum profundus which travel along the lateral aspect of digits 2 to 5 and inserts onto the dorsal aspect of digits 2 to 5
481
What are the lumbrical muscles innervated by
The lateral 2 muscles which follow digits 2 and 3 are innervated by the median nerve The medial 2 muscles which follow digits 4 and 5 are innervated by the ulnar nerve
482
What are the interossei muscles attached to
They attach to and lie between the metacarpals
483
What do the interossei muscles insert onto
They insert onto the dorsal aspects of digits 2 to 5
484
How many groups of interossei muscles are there
There are 2 groups of interossei muscles the palmar group and the dorsal group
485
How many palmar interossei muscles are there
There are 3 palmar interossei muscles
486
How many dorsal interossei muscles are there
4 dorsal interossei muscles
487
Where does the first palmar interosseous arise from and where does it insert
The first palmar interosseous arises from the medial side of the 2nd metacarpal and it inserts onto the medial aspect of the 2nd proximal phalanx
488
Where does the second interosseous arise and where do they insert
The second interosseous arises from the lateral aspect of the 4th metacarpal and inserts onto the lateral aspect of the 4th proximal phalanx
489
Where does the third palmar interosseous arise from and insert onto
The third palmar interosseous arises from the lateral aspect of the 5th metacarpal and inserts onto the lateral aspect of the 5th proximal phalanx
490
Where does the first dorsal interosseous arise from and where does it insert
The first dorsal interosseous arises from the medial side of the 1st metacarpal and the lateral side of the 2nd metacarpal and inserts onto the lateral aspect of the 2nd proximal phalanx
491
Where does the second dorsal interosseous arise from and where does it insert to
The second dorsal interosseous arises from the medial side of the 2nd metacarpal and the lateral side of the 3rd metacarpal and inserts onto the medial aspect of the 3rd proximal phalanx
492
Where does the forth dorsal interosseous arise from and where does it insert
The forth dorsal interosseous arises from the medial side of the 4th metacarpal and lateral side of the 5th metacarpal and inserts onto the medial aspect of the 4th proximal phalanx
493
What are the important structures travelling through the carpal tunnel
Long flexor tendons of the flexor digitorum superficialis, flexor digitorum profundus and flexor pollicis longus and the median nerve
494
What travels through the wrist but superficial to the flexor retinaculum and over the the carpal tunnel
The tendons of the flexor capri radialis, the flexor capri ulnaris and the palmaris longus, radial artery, ulnar artery and ulnar nerve
495
What are the territories the median nerve supplies
The palmar surface of the lateral side of the hand The palmar surface of the lateral 3 1/2 digits The skin over the dorsum of the distal phalanges of the lateral 3 1/2 digits
496
What territories does the ulnar nerve supplies
The palmar and dorsal surfaces of the medial side of the hand and the medial 1 1/2 digits
497
What territories does the radial nerve supply
The dorsal surface of the lateral side of the hand and the skin over the dorsum of the lateral 3 1/2 digits as far as the DIP joint
498
Where would you test sensation of the median nerve
The palmar surface of the middle finger
499
Where would you test the ulnar nerve
The medial border of the hand
500
Where would you test the radial nerve
The dorsum of the hand lateral aspect
501
What supplies the palm of the hand
The cutaneous branches of the middle and ulnar nerves supply the palm of the hand
502
Where do the cutaneous branches of the medial and ulnar nerves arise from
They arise in the forearm
503
What is a dermatome
A dermatome is a region of skin innervated by a single spinal nerve
504
What is the upper limb innervated by
The upper limb is innervated by the brachial plexus and spinal nerves C5-T1
505
What region does C4 innervate
The upper shoulder
506
What region does C5 innervate
C5 innervates the lateral side of the anterior and posterior aspects of the arm
507
What region does C6 innervate
The lateral side of the anterior and posterior surfaces of the forearm, the lateral side of the anterior and posterior surface of the palm and the anterior and posterior surfaces of the thumb and index fingers
508
What region does C7 innervate
C7 innervates the anterior and posterior surfaces of the middle finger and middle of the palm over the 3rd metacarpal
509
What region does C8 innervate
C8 innervates the medial side of the anterior and posterior surfaces of the forearm, the medial side of the anterior and posterior surfaces of the palm and the anterior and posterior surfaces of the forth and fifth fingers
510
What region does T1 innervate
T1 innervates the medial side of the anterior and posterior surfaces of the arm
511
What is the blood supply to the hand
The radial and ulnar arteries supply the hand
512
Where do the ulnar and radial arteries branch from
They branch from the brachial artery
513
Where does the radial artery travel
The radial artery travels down the lateral aspect of the forearm
514
Where does the ulnar artery travel
The ulnar travels down the medial aspect of the forearm.
515
What forms the palmar arches
The palmar arches are formed by the anastamoese of the radial and ulnar arteries
516
What is the superficial palmar arch formed of
The superficial palmar arch is formed largely by the ulnar artery with a small contribution from the radial artery
517
What is the deep palmar arch formed of
The deep palmar arch is formed largely by the radial artery with a small contribution from the ulnar artery
518
What do the palmar arches give rise to
They give rise to the metacarpal and digital arteries which supply the palm and digits which are accompanied by digital nerves
519
Why is the anastomosis between the radial and ulnar arteries important
It is important to ensure perfusion of the hand is maintained in the event that one of the vessels becomes occluded or injured
520
How do you test the tendons of the flexor digitorum superficialis, the flexor digitorum profundus and the flexor pollicis longus
In a case where there are palmar injuries the long flexor muscles need to be assessed. To do this each tendon needs to be isolated to test each one in turn. To test the flexor digitorum profundus the PIP joint is held immobile by the examiner and the patient is asked to flex the finger, if the FDP is intact, flexion will be seen at the DIP joint To test the flexor digitorum superficialis, the patient should turn the hand supine, the examiner uses a hand to keep all the fingers not been tested straight which immobilises the FDP, the patient is then asked to flex the finger that remains free, if the FDS is intact flexion occurs at the PIP joint To test the flexor pollicis longus, movement at the IP joint is assessed
521
What is the typical presentation of carpal tunnel syndrome
Impaired sensation Pins and needles Pain in the hand over the palmar aspect of the lateral 3 1/2 digits
522
Why is sensation in the palm of the hand unusually unaffected in carpal tunnel syndrome
It is unaffected as the branches of the median nerve that innervates the skin of the lateral palm arises in the forearm and do not travel through the carpal tunnel so are unaffected by compression of the median nerve
523
What happens in dupuytrens contracture
In this condition the fingers are pulled into flexion by progressive fibrosis of the palmar fibrosis and palmar aponeurosis
524
What is tenosynovitis
This is inflammation of a flexor tendon and its synovial sheath may result if the sheath is breached by a penetrating injury
525
What is the scaphoid bone formed from
It is formed from 2 bones which each have there own blood supply which fuse together. With fusion the artery to the proximal end degenerates and the bone is supplied from the distal end
526
What can happen during a scaphoid fracture
When the scaphoid fractures the proximal part of the bone may become disconnected from the blood supply and death of the proximal segment occurs which is known as a vascular necrosis
527
Why is a vascular necrosis serious
It is serious because the proximal scaphoid articulates with the distal radius at the wrist joint, so fractures cannot be missed so even if a fracture of the scaphoid isn’t seen on the X-ray straight away they should still be followed up
528
What causes a fracture of the 5th metacarpal
Typically is sustained by punching something
529
What is the typical presentation of a fracture of the 5th metacarpal
Usually pain, swelling and tenderness over the 5th metacarpal
530
What are general statements about the posterior compartment of the forearm
They are arranged in 2 layers- superficial and deep Most muscles are extensors of the wrist, digits or thumb They are all innervated by the radial nerve
531
How many muscles make up the superficial layer in the posterior compartment of the forearm
6 muscles
532
What are the 6 muscles in the posterior compartment of the upper limb
Barachioradialis Extensor capri radialis longus Extensor capri radialis brevis Extensor digitorum Extensor digiti minimi Extensor capri ulnaris
533
As a general rule where do all the muscles in the superficial layer of the posterior compartment
All the muscles are attached proximally to the lateral epicondyle of the humerus
534
What is the lateral epicondyle also known as
The common extensor origin
535
Where does the brachioradialis originate and where does it insert
It originates from the humerus proximal to the lateral epicondyle and it inserts onto the distal radius
536
What is the function of brachioradialis
It acts as a weak flexor of the elbow joint
537
What is brachioradialis innervated by
It is innervated by the radial nerve
538
Where does the extensor carpi radialis longus insert onto
It inserts on to the 2nd metacarpal
539
Where does the extensor carpi radialis brevis insert onto
It inserts onto the 3rd metacarpal
540
What is the function of the extensor carpi radialis longus and brevis
Extend and abducts the wrist
541
What is the function of the extensor digitorum
It extends the digits via 4 long tendons
542
Where does extensor digitorum insert onto
It inserts onto the dorsal aspect of the fingers
543
What makes it difficult to fully extends the middle or ring fingers independently
It is difficult to do this because the tendons of the extensor digitorum are connected by fibrous bands
544
What is the function of the extensor digiti minimi
Extends the little finger
545
Where does the extensor digiti minimi insert onto
It inserts onto the dorsum of the little finger
546
What is the function of the extensor carpi ulnaris
It extends and adducts the wrist
547
Where does the extensor carpi ulnaris insert onto
It inserts onto the 5th metacarpal
548
What travels under the extensor retinaculum
All the tendons of the superficial layer muscles
549
What is the function of the extensor retinaculum
It prevents the tendons from bowing when the wrist is extended
550
How many muscles make up the deep layer of the posterior compartment
5 muscles
551
What are the 5 muscles of the deep layer of the posterior compartment
Supinator Abductor pollicis longus Extensor pollicis brevis Extensor pollicis longus Extensor indicis
552
Where do the muscles of the deep layer of the posterior compartment attach to and what is the exception
They all attach proximally to the forearm bones and the interosseous membrane except from the supinator which attaches proximal to the humerus
553
What is the function of the supinator
It supernates the forearm and hand
554
What is the function of the abductor pollicis longus
It abducts the thumb
555
Where does the abductor pollicis longus insert onto
It inserts onto the 1st metacarpal
556
What is the function of the extensor pollicis brevis and extensor pollicis longus
It extends the thumb
557
Where does the extensor pollicis brevis insert onto
It inserts onto the proximal phalanx
558
Where does the extensor pollicis longus insert onto
It inserts onto the distal phalanx
559
What does the extensor indicis insert onto
It inserts onto the dorsum of the index finger
560
What are all muscles of the posterior compartment innervated by
They are all innervated by the radial nerve
561
Where does the dorsal venous network drain into
It drains into the cephalic vein laterally and into the basilic vein medially
562
What is the extensor expansion also knonw as
The extensor hood
563
What is the extensor expansion
It is a fibrous structure that overlies the dorsal aspect of the digits
564
What is the extensor expansion attached to
It is attached to the base of the proximal phalanx
565
What does the extensor expansion give rise to
It gives rise to a central slip and 2 marginal slips
566
Where does the central slip insert onto
It inserts onto the middle phalanx
567
Where does the marginal slips insert onto
They insert onto the distal phalanx
568
Where do the tendons of the extensor digitorum, extensor indicis and the extensor digiti minimi insert onto and what is the purpose of it
It inserts onto the dorsal aspect of the extensor expansion and this helps to keep the tendons fixed in the midline of the digits
569
What is the anatomical snuffbox
It is a triangular shaped depression on the lateral aspect of the wrist at the base of the thumb which can be seen when the thumb is extended
570
What are the boundaries of the anatomical snuffbox
The anatomical snuffbox boundaries are as follows The tendon of the extensor pollicis longus medially The tendons of the extensor pollicis brevis and abductor pollicis longus laterally
571
Why is the anatomical snuffbox clinically important
The scaphoid lies in the floor of the snuffbox - tenderness of the snuffbox on palpitation can be an indication of a scaphoid fracture The radial artery travels through it The cephalic vein arises in the anatomical snuffbox which it can be cannulated here if necessary The superficial branch of the radial nerve runs over the anatomical snuffbox to supply the skin over the lateral aspect of the dorsum of the Hand
572
What is the posterior compartment of the upper limb supplied by
It is supplied by a branch of the ulnar artery
573
What could injury to the radial nerve in the arm cause
Injury to this nerve could cause the inability to extend the wrist and fingers
574
What innervated the skin over the lateral aspect of the dorsum of the hand
The superficial branch of the radial nerve
575
What type of joint is the shoulder joint
A synovial ball and socket joint
576
What forms the shoulder joint
The joint is formed by the articulation between the glenoid fossa of the scapula and the head of the humerus
577
Why does the shoulder joint have a large range of movement
The shoulder joint has a large range of movement because the fit between the 2 articulating surfaces is poor
578
What type of joint is the elbow joint
A synovial hinge joint
579
What forms the elbow joint
The elbow joint is formed by the articulation between the trochlear of the humerus and the trochlear notch of the ulnar and the capitellum of the humerus and the radial head
580
What type of joints are the proximal and distal radioulnar joints
They are synovial pivot type joints
581
What forms the radioulnar joints
The articulation between the radius and the ulnar
582
What type of joint is the wrist joint
The wrist joint is a condyloid synovial joint
583
What forms the wrist joint
The wrist joint is formed by the articulation if the distal radius with scaphoid and the lunate
584
What types of joints are found in the hand
They joints of the hands are synovial joints
585
What is lateral epicondylitis
When the attachments of the extensor muscles to the lateral epidcondyle may becomes inflammed
586
What is the presentation of lateral epicondylitis
Pain felt over the region of the lateral epicondyle Pain may radiate down the forearm
587
What can cause lateral epicondylitis
Repetitive strain of the muscles
588
What can lateral epicondylitis also be known as
Tennis elbow
589
What can radial head subluxation also be known as
Pulled elbow
590
What is radial head subluxation
The angular ligament is partially torn and the radial head moves out of the ligament usually seen in young children
591
What can cause radial head subluxation
It can be caused by the child being suddenly pulled upwards by their arm
592
What is the typical presentation of radial head subluxation
Painful Children wont use there arm
593
What can treat radial head subluxation
The subluxed head is reduced and the tear will heal
594
What is a wrist drop
This describes the inability to extend the wrist and fingers due to weakness or paralysis of the posterior forearm muscles
595
What can cause wrist drop
It can be caused by injury to the radial nerve proximal to the forearm, which will typically caused by a mid-shaft humeral fracture as the radial nerve lies so close to the bone
596
What are the 2 types of arthritis
Osteoarthritis Rheumatoid arthritis
597
What is osteoarthritis
This is wear and tear arthritis and is more common in older people it affects large and small joints, mostly in the hands
598
What is rheumatoid arthritis
It is an autoimmune condition which affects synovial joints and the small joints of the hands and feet
599
What is the pelvis made up of
The two hip bones and the sacrum
600
What is the thigh
The thigh is region between the hip and knee joints
601
What is the bone of the thigh
The femur
602
What are the muscle compartments of the thigh
Anterior Medial Posterior
603
What is the leg
This is the region between the knee and the ankle joint
604
What are the bones of the leg
The bones of the leg are the tibia and fibula
605
What muscle compartments does the leg have
Anterior Lateral Posterior
606
What is the foot
The region which sits distal to the ankle
607
What is the plantar surface of the foot
The sole of the foot
608
What is the dorsum of the foot
The top of the foot
609
What movements does the hip joint allow
Flexion Extension Abduction Adduction Medial rotation Lateral rotation
610
What type of joint is the hip joint
A synovial ball and socket joint
611
What forms the hip joint
The articulation between the acetabulum and the proximal femur
612
What movement is allowed at the knee joint
Flexion Extension
613
What type of joint is the knee joint
Synovial hinge joint
614
What forms the knee joint
Formed by the articulation of the distal femur with the tibia
615
What movement is allowed at the ankle joint
Flexion/ plantarflexion Extension/dorsiflexion
616
What type of joint is the ankle joint
A synovial hinge joint
617
What forms the ankle joint
It is formed between the articulation between the distal ends of the tibia and fibula with the talus
618
What movement is allowed at the toes
Flexion Extension Adduction Abduction
619
What is the pelvis and what is its function
This is a bony ring formed by the articulation of the left and right innominate bones and the sacrum It’s function is to hold the weight of the upper body and distribute this to the lower limbs
620
What forms a hip bone
The pubic bone The ilium The ischium All 3 bones fuse at the acetabulum which forms the socket of the hip joint
621
What do the hip bones articulate with anteriorly and posteriorly
They articulate with each other at the pubic symphysis anteriorly They articulate with the sacrum posteriorly
622
What surrounds the obturator foramen
The superior and inferior pubic rami
623
What closes over the obturator foramen
The obturator membrane and the muscles that attach to it
624
What is the obturator canal
This is the small gap left in the obturator foramen
625
What runs through the obturator canal
Vessels and nerves to pass between the pelvis and thigh
626
What is the upper most part of the ilium
The iliac crest
627
What lies anterior to the iliac crest
The anterior superior iliac spine and the anterior inferior iliac spine
628
What lies posteriorly to the iliac crests
Ischial tuberosity, the ischial spine and the greater and lesser sciatic notches
629
What is the long bone of the thigh
The femur
630
What are the parts which make up the femur
The head The neck The shaft
631
What does the head of the femur articulate with
The acetabulum of the pelvis to form the hip joint
632
Where are the greater and lesser trochanters and what is there function
They are found distal to the neck of the femur and they are sites for muscle attachments
633
Where does the intertrochanteric line lie
It lies between the greater and lesser trochanters on the anterior surface of the femur
634
Where can the trochanteric fossa found
It is a small hollow on the medial aspect of the greater trochanter
635
What is the linea aspera
It is a bony vertical ridge on the posterior aspect of the shaft of the femur
636
What is the function of the linea aspera
It is the site of muscle attachment
637
Where can you find the medial and lateral femoral condyles
They are found at the distal end of the femur
638
What do the medial and lateral femoral condyles articulate with
They articulate with the proximal tibia at the knee joint
639
Where can you find the adductor tubercle
Superior to the medial femoral condyle
640
Where does the patella lie in relation to the knee joint
Anterior to the knee joint
641
Where do the muscles that flex the thigh at the hip joint lie
In the anterior thigh muscles flex the thigh at the hip joint
642
Where do the muscles that adduct the thigh at the hip joint lie
Muscles in the medial thigh can adduct the thigh at the hip joint
643
Where do the muscles that extend the thigh at the hip joint lie
Muscles in the posterior thigh extend the thigh at the hip joint
644
Where do the muscles that extend the leg at the knee joint lie where
They are found in the anterior thigh
645
Where do the muscles that flex the leg at the knee joint lie where
They are found in the posterior thigh
646
What surrounds the thigh
Deep fascia known as the fascia lata
647
What is the iliotibial band
It is a thickening of the lateral part of the fascia lata
648
Where does the iliotibial band attach to and what is its function
It attaches to the lateral aspect of the proximal tibia and is important for stabilising the knee joint
649
What is the intermuscular septa
It extends from the fascia lata to the linea aspera and seperate the thigh into anterior, medial and posterior compartments
650
How many muscles make up the anterior compartment of the thigh
7 muscles
651
What are the 7 muscles of the anterior compartment of the thigh
Quadriceps femoris (group of 4 large muscles) Sartorius Iliopsoas Pectineus
652
What is the prime extensor of the knee
The quadriceps femoris
653
What are the 4 muscles of the quadriceps femoris
Rectus femoris Vastus lateralis Vastus medialis Vastus intermedius
654
Where do the muscles of the quadreiceps femoris converge onto
These muscles converge onto the quadriceps tendon
655
We’re does the quadriceps tendon run
Runs over the patella
656
Where does the quadriceps femoris insert onto
It inserts onto the tibial tuberosity via the patellar ligament
657
Where does the rectus femoris attach to and what is its function
It attaches to the anterior inferior iliac spine proximally It’s function contributes to the flexion of the hip
658
Where does the Vastus lateralis attach to
It attaches to the posterior aspect of the femoral shaft
659
Where does the Vastus medialis attach to
It attaches to the linea aspera
660
Where does the Vastus intermedius attach to
It attaches to the anterior aspect of the femoral shaft
661
Where is the sartorius lie
It is found superficially in the anterior thigh
662
Where does the sartorius muscle attach to and where does it insert onto
It attaches to the anterior superior iliac spine and inserts onto the medial aspect of the proximal tibia
663
What is the function of the sartorius muscle
It flexes and laterally rotates the hip joint and flexes the knee joint
664
What is the prime flexor of the hip joint
The iliopsoas
665
Where does the pectineus attach to
It attaches proximally at the superior pubic ramus and distally on the femur
666
What is the function of the pectineus
It flexes and adducts the hip joint
667
How many muscles are in the medial compartment of the thigh
Five muscles
668
What are the 5 muscles of the medial compartment of the thigh
Adductor brevis Adductor longus Adductor Magnus Gracilis Obturator externus
669
What are the muscles of the medial compartment of the thigh innervated by
They are innervated by the obturator nerve- spinal nerves L2-L4
670
What do the adductor brevis and adductor longus attach to
They have similar attachment points at the pubic bone and the linea aspera
671
What lies between the adductor brevis and adductor longus
The obturator nerve
672
How many parts makes up the adductor Magnus
2 parts
673
What are the 2 parts of the adductor Magnus
The adductor part and the hamstring part
674
Where does the adductor part of the adductor Magnus attach to and what is it innervated by
The adductor part of the adductor Magnus attaches to the inferior pubic ramus and is innervated by the obturator nerve
675
What is the hamstring part of the adductor Magnus attach to
It attaches to the ischial tuberosity and the adductor tubercle
676
What is the adductor hiatus
It is a gap formed by the distal attachments of the 2 parts of the adductor Magnus
677
What travels through the adductor hiatus
The femoral artery and vein to get to the posterior thigh
678
What does the gracilis attach to
It attaches to the pubic bone and the medial aspect of the tibia
679
What is the function of the gracilis
It is a weak adductor and flexor of the hip and a weak flexor of the knee It is not a prime mover
680
What does the obturator externus attached to and what does it insert onto
It is attached to the external surface of the obturator membrane and it inserts onto the femur near the greater trochanter
681
What is the function of the obturator externus
It stabilises ans laterally rotates the hip joint
682
What is the femoral artery a continuation of
It is a continuation of the external iliac artery
683
What is the deep artery of the thigh a branch of
The deep artery of the thigh is a branch of the femoral artery
684
What is the deep artery of the thigh also known as
Profundus femoris
685
What does the femoral artery become
The femoral artery becomes the popliteal artery when it travels through the adductor hiatus
686
What is the obturator artery a branch of
It is a branch of the internal iliac artery
687
Where does the obturator artery travel through
The obturator artery travels though the obturator canal and anastomoses with branches of the femoral artery
688
What is the femoral vein a continuation of
The femoral vein is a continuation of the external iliac vein
689
Where does the obturator vein travel
It travels through the obturator canal
690
What does the obturator vein join with
The obturator vein joins the internal iliac vein in the pelvis
691
What spinal nerve form the femoral nerves
The femoral nerve is formed by the L2-L4 spinal nerves
692
What does the femoral nerve innervate
Branches of the femoral nerve innervates the anterior thigh muscles
693
What is the saphenous nerve
The saphenous nerve is the sensory branch of the femoral nerve
694
What does the saphenous nerve innervate
It innervates the skin over the leg
695
What spinal nerves form the obturator nerve
The obturator nerve is formed by the L2-L4
696
What does the obturator nerve give rise to
The obturator nerve gives rise to branches that innervate the medial compartment muscles and the skin over the medial thigh
697
Where is the femoral triangle
It is a region of the proximal anterior thigh
698
What are the boundaries of the femoral triangle
Lateral boundary- formed by the medial border of the sartorius Medial boundary- formed by the lateral border of the adductor longus Superior boundary- formed by the inguinal ligament
699
What forms the apex of he femoral triangle
The apex of the triangle is distal where the sartorius muscle and adductor longus muscle meets
700
What forms the floor of the femoral triangle
It is formed by the iliopsoas laterally and the pectineus medially
701
Where can the femoral artery be palpated
It can be palpated in the femoral triangle
702
What can be found in the femoral triangle
The femoral artery The femoral vein The femoral nerve
703
What does the femoral vein receive in the femoral triangle
It receives the great saphenous vein
704
What does a fracture hip refer to
A fractured hip refers to a fracture of the femoral neck which is extremely common in the elderly population
705
What can cause a hip fracture
It can be cause by a low energy fall
706
What can be a contributing factor to a hip fracture
Osteoporosis
707
What is the typical presentation of a fractured hip
Pain in the groin Struggle to the walk Typically finding a shortening and lateral rotation of the affected limb compared to the uninjured limb
708
Why could a hip fracture cause a vascular necrosis
The fracture may tear the vessels that supply the femoral head and neck which leads to avascular necrosis of the femoral head
709
Why is the femoral artery clinically important
The femoral artery is very commonly used for coronary angiography
710
In an emergency why is the femoral vein clinically important
It can be used for access for blood samples if they cannot be obtained from peripheral veins
711
Why is the femoral nerve clinically important
It can be blocked by infiltrating local anaesthetic around it which can used to relieve pain in lower limb fractures
712
What is a femoral hernia
It is a abnormal protrusion of the intestines into the upper anterior thigh, which is more commonly seen in females
713
What can strangulation of the herniated intestines lead to
Strangulation of the herniated intestines leads to ischaemia and infarction of the tissue
714
Why can the obturator nerve become irritated
The obturator nerve lies close to the ovary, if there is any ovary pathology such as cysts they may irritate the nerve
715
What are the 3 ridges on the posterior aspect of the ilium
Anterior Posterior Inferior Gluteal ridges
716
What are the 2 notches of the ilium and ischium
The greater and lesser sciatic notches
717
What ligaments close the lesser and greater notches to close them
The sacrotuberous and sacrospinous ligaments
718
When the ligaments close the greater and lesser notches what do they become
The greater and lesser sciatic foramina
719
What attaches to the ischial spine and posterior ischium
The sacrospinous ligament
720
What is the part of the pelvis we sit on
The ischial tuberosity
721
What is the intertrochanteric crest
It is a ridge of bone that lies between the trochanters on the posterior aspect of the femur
722
Where is the gluteal tuberosity found
It is found just inferior to the trochanters on the posterior aspect of the femur
723
How many muscles groups does the gluteal region have
2 groups a superficial group and a deep group
724
How many muscles are found in the superficial layer of the gluteal region
4 muscles
725
What are the 4 muscles of the superficial layer of the gluteal region
Gluteus maximum Gluteus medius Gluteus minimus Tensor fascia latae
726
Which is the most superficial muscle in the superficial muscle layer of the gluteal region
The gluteus maximus
727
What attachments does the gluteus maximus make
It is attached to the most posterior parts of the posterior surface of the ilium, the sacrotuberous ligament and the sacrum
728
Where do most of the fibres of the gluteus maximus insert onto distally
They insert into the iliotibial tract
729
What is the function of the gluteus maximus and what is it important for
It is an extensor of the hip and is important for standing from a sitting position It can also play a role in lateral rotation of the hip
730
Where is the gluteus medius found
Deep to the gluteus maximus
731
Where is gluteus minimus found
Deep to gluteus medius
732
Where do the gluteus medius and minimus attach to
They attach to the anterior parts of the posterior ilium
733
Where do the gluteus medius and minimus insert onto
They insert onto the greater trochanter
734
What are the functions of the gluteus medius and gluteus minimus
They both abduct and medially rotate the hip
735
What are the gluteus medius and minimus play an important role in
They play an important role in normal gait, when we walk or run one foot is always off the floor
736
Why are gluteus medius and minimus play an important role in normal gait
When we walk or run there is always one foot off the floor so in the limb that is on the floor the gluteus medius and minimus contract to hold the pelvis level so it doesn’t tilt to the side that is unsupported
737
Why do we get a limp
We get a limp if the gluteus medius and minimus become weak or paralysed in one limb so the pelvis would tilt to the contralateral side of the body when the contralateral leg is off the ground
738
Where does the tensor fascia latae attach to
It attaches to the anterior superior iliac spine
739
Where doe the tensor fascia latae insert onto
It inserts onto the iliotibial band
740
Where does the iliotibial band insert onto
It inserts onto the proximal tibia
741
What is the action of the tensor fascia latae
Contraction of this muscle tenses the fascia lata and the iliotibial band
742
What is the tensor fascia latae important for
It is important for stabilising the knee when it is extended and flexes the hip joint
743
What are the superficial layer muscles of the gluteal region innervated by
They are innervated by gluteal nerves
744
Where do gluteal nerves arise from and how do they exit the pelvis
They arise from the sacral plexus in the pelvis and then exit via the greater sciatic foramen
745
What nerve innervated the gluteal maximus
The inferior gluteal nerve
746
What nerve innervates the gluteus medius and minimus and the tensor fascia latae
The superior gluteal nerve
747
What are the roles of the muscles of the deep gluteal region
They primarily stabilise and laterally rotate the hip joint
748
How many muscles make up the deep layer of the gluteal region
5 muscles
749
What muscles make up the deep layer of the gluteal region
Piriformis The superior and inferior gemelli Obturator internus Quadratus femoris
750
Where do all the muscles of the deep layer of the gluteal region insert onto
They all insert onto or close to the greater trochanter
751
Where does piriformis attach to
Anterior surface of the sacrum
752
Where does the piriformis pass though
It passes through the greater sciatic foramen
753
Where does piriformis insert onto
Onto the greater trochanter
754
What does the sciatic nerve bifurcate into
Tibial and common peroneal/ common fibular nerves
755
Where does the sciatic nerve bifurcate
It bifrucates in the posterior thigh
756
Where does the obturator internus arise from
Obturator internus arises from the obturator membrane
757
How many muscles make up the posterior compartment
4 muscles
758
What are the 4 muscles of the posterior compartment of the thigh
Semimembranosus Semitendinosus Biceps femoris ( a long and short head) Hamstring part of the adductor Magnus
759
Which 3 muscles of the posterior compartment span both the hip and knee joint and what is this group of muscles known as
Semimembranousus, semitendinousus and the long head of the biceps femoris they are known as the hamstring
760
Where do the group of hamstring muscles attach to
They attach proximally to the ischial tuberosity
761
What are the actions of the hamstring muscles
They extend the hip, flex the knee
762
What innervates the group of muscles in the hamstring
They are innervated by the tibial nerve
763
Where do semimembranosus and semitendinosus insert onto
They insert onto the medial aspect of the proximal tibia
764
What does the long head of bicep femoris forms a common tendon with what
The long head of the bicep femoris forms a common tendon with the short head of the bicep femoris
765
Where does the common tendon of the long and short head of the bicep femoris insert onto
It inserts onto the head of the fibula
766
Where does the short head of bicep femoris arise from
The short head of the bicep femoris arises from the linea aspera
767
What is the role of the short head of the bicep femoris
It flexes the knee
768
What innervates the short head of the bicep femoris
It is innervated by the common peroneal nerve
769
Where does the hamstring part of the adductor Magnus arise from and where does it insert
The hamstring part of the adductor Magnus arises from the ischial tuberosity and it inserts onto the adductor tubercle of the femur
770
What is the role of the hamstring part of the adductor Magnus
It extends the hip
771
What nerve innervates the hamstring part of the adductor Magnus
The tibial nerve
772
What nerve innervates the semimebranosus, emitendinosus and the long head of the bicep femoris
The tibial nerve
773
What is the action of semimembranosus
Extension of the hip and flexion of the knee
774
What is the action of semitendinosus
Extension of the hip and flexion of the knee
775
What is the action of long head of bicep femoris
Extension of the hip and flexion of the knee
776
What is the action of short head of bicep femoris
Flexion of the knee
777
What nerve innervates the hamstring part of the adductor Magnus
Tibial nerve
778
What is the action of the adductor Magnus - hamstring part
Extension of the hip
779
What is the action of adductor Magnus - adductor part
Adduction of the hip
780
What nerve innervates the adductor Magnus - adductor part
Obturator nerve
781
What arteries supply the gluteal muscles
Superior and inferior gluteal arteries
782
Where do the gluteal arteries arise from
They arose from the internal iliac artery
783
How do the gluteal arteries leave the pelvis
They leave the pelvis via the sciatic foramen
784
What arteries supply the hamstring muscles
They are supplied by 3 or 4 perforating arteries
785
Where do the perforating arteries arise from
They arise from the profunda femoris
786
How do the perforating arteries reach the posterior compartment
They reach the posterior compartment by travelling through small apertures in the adductor Magnus
787
What does the femoral artery become
It becomes the popliteal artery
788
When does the femoral artery becomes the popliteal artery
When the femoral artery passes through the adductor hiatus and enters the region behind the knee known as the popliteal fossa
789
Where do the superior and inferior gluteal veins enter the pelvis
They enter the pelvis though the greater sciatic foramen
790
Where do the superior and inferior gluteal veins drain into
They drain into the internal iliac vein
791
What does the popliteal vein become after passing though the adductor hiatus
It becomes the femoral vein
792
What vein joins the femoral vein in the femoral triangle
The great saphenous vein joints the femoral vein in the femoral triangle
793
What does the femoral vein become after it has travelled under the inguinal ligament
It becomes continuous with the external iliac vein
794
What are the gluteal muscles innervated by
They are innervated by the superior and inferior gluteal nerves
795
What nerve fibres contribute to the sciatic nerve
Fibres from L4 to S3
796
What does the tibial nerve innervate
It innervates the posterior thigh and posterior leg
797
What does the common peroneal nerve innervate
It innervates the anterior and lateral leg
798
What is the popliteal fossa
It is a diamond-shaped depression behind the knee joint
799
What are the 2 superior borders of the popliteal fossa formed of
Semimembranosus and semitendinosus medially and laterally biceps femoris
800
What forms the infromedial and intro lateral borders of the popliteal fossa
They are formed by two heads of gastrocenminus
801
What is gastrocnemius
It is a superficial muscle in the posterior leg
802
What are important structures that run through the popliteal fossa
Popliteal artery Popliteal vein Tibial nerve Common peroneal nerve
803
What does the popliteal artery bifurcate into
It bifurcates into anterior and posterior tibial arteries
804
What does the common peroneal nerve split into
It splits into a superficial and deep nerve
805
When does the common peroneal nerve split into the superficial and deep branches
When the common peroneal nerve wraps around the neck of the fibula it splits
806
What does the superficial branch of the common peroneal nerve innervate
Muscles of the lateral leg
807
What does the deep branch of the common peroneal nerve innervate
It innervates the muscles of the anterior leg
808
Where is a common site for intramuscular injections
Gluteus maximus
809
Why is some areas of the gluteal maximus need to be avoided for intramuscular injection
Because of the sciatic nerve
810
Where is the only safe place to give a intramuscular injection in the gluteus maximus
The upper outer quadrant
811
What is sciatica
Common term used to describe pain that is felt in the posterior thigh
812
What causes sciatica
Compression of the nerve roots that contribute to the sciatic nerve due to a prolapses intervertebral disc between L5 and S1
813
What is a popliteal aneurysm
It is an aneurysm of the popliteal artery
814
What can be a result of a popliteal aneurysm
A blood clot an form within the leg, occluding blood flow, leading to the tissue becoming ischaemia and tissue death
815
Why type of joint is the hip joint
It is a synovial ball and socket joint
816
What articulates in the hip joint
The acetabulum and the head of the femur
817
Is the hip joint stable to unstable and why
The hip is a stable joint as the acetabulum is deep and there is a good fit between that and the femoral head
818
What deepens the acetabulum
The rim of fibrocartilage
819
What attaches the femoral head to the acetabulum
The ligament of the head of the femur
820
Where do arteries to the hip joint arise from
The profunda femoris
821
What do the retinacular arteries supply and where do they arise
They supply the neck of the femur and arise from the profunda femoris
822
How many ligaments stabilise the hip joint
3 ligaments
823
What are the 3 ligaments that stabilise the hip joint
Iliofemoral Pubofemoral Ischiofemoral
824
Out of the 3 ligaments that stabilise the hip joint which are anterior and which are posterior
Iliofemoral and pubofemoral are anterior ligaments Ischiofemoral is posterior
825
How do the ligaments of the hip joint stabilise it
When the hip is extended the ligaments become taut and hold the femoral head more tightly
826
What muscles are involved in flexion of the hip
Iliopsoas Rectus femoris Pectineus Sartorius
827
What muscles are involved in extension of the hip
Gluteus maximus Semimembranosus Semitendinosus Biceps femoris
828
What muscles are involved in abduction of the hip
Gluteus medius Gluteus minimus Piriformis Tensor fascia tatae
829
What muscles are involved in adduction of the hip
Abductor longus Abductor brevis Abbductor magnus Pectineus Gracilis
830
What muscles are involved in lateral rotation of the hip
Biceps femoris Gluteus maximus Piriformis Assisted by Obturators, Gemilli and quadratus femoris
831
What muscles are involved in medial rotation of the hip
Anterior fibres of the gluteus medius and minimus and tensor fascia tatae
832
What type of joint is the knee joint
The knee joint is a synovial hinge joint
833
What are the articulations between in the knee joint
The femoral condyles and the tibial condyles
834
When is the best fit achieved in relation to the knee joint
The femur and tibia reach there best fit with each other when the knee is extended
835
When is the knee joint the most stable
The knee joint is more stable when it is in extension
836
What stabilises the knee joint
The iliotract attaches to the lateral aspect of the tibia and stabilises the knee joint
837
What muscles are involved in flexion of the knee joint
Produced by the hamstring muscles Gracilis Sartorius Popilteus
838
What muscles are involved in extension of the knee joint
Produced by the quadriceps femoris
839
What is the menisci
It is c-shaped cartilages
840
Where are menisci located
They lie on the tibial plateaus
841
What is the function of the menisci
They deepen the tibial condyles for articulations with femoral condyles
842
Where is the medial menisci attached to
The medial menisci is attached to the joint capsule along its peripheral margin and attached to the medial collateral ligament
843
Why are the medial menisci prone to injury if the knee is twisted more so than the lateral menisci
The medial menisci is more prone to injury than the lateral menisci because it is attached to something at both sides whereas the lateral menisci is not attached to the lateral collateral ligament so can more freely moved
844
What are the 2 important pairs of ligaments in the knee
The collateral ligaments and the cruciate ligaments
845
What is the role of the medial and lateral collateral ligaments
The medial and lateral collateral ligaments support the knee and resist sideways movements of the tibia on the femur
846
What does the medial collateral ligament attach
The medial attaches the femur to the tibia
847
What does the lateral collateral ligament attach
The lateral attaches the femur to the fibula
848
Where is the medial collateral ligament attach to
It is attached to the medial meniscus
849
Where is the lateral collateral ligament attach to
It is attached to the lateral meniscus
850
When are the collateral ligaments loose
They are loose when the knee is flexed
851
What do the the anterior and posterior cruciate ligaments connect
They connect the tibia to the femur
852
When are the cruciate ligaments taut
They are taut when the knee is extended
853
Where does the anterior cruciate ligament attach to
The anterior cruciate ligaments is attached to the anterior part of the intercondyle area of the tibia and the medial aspect of the lateral condyle of the femur
854
If you can pull the tibia anteriorly which does this indicate
An anterior cruciate ligament injury
855
Where does the posterior cruciate ligament attached to
It attaches to the posterior part of the intercondyle area of the tibia and the lateral aspect of the medial condyle of the femur
856
What is the function of the posterior cruciate ligament
It prevents the tibia from moving posteriorly relative to the femur
857
What is the posterior cruciate ligament important for
Crucial for stability of the knee when walking downhill or downstairs
858
What type of joint is the ankle joint
It is a synovial hinge joint
859
What are the articulations in the ankle joint
Between the distal tibia, distal fibula and the talus
860
What forms the socket in the ankle joint
The tibia and fibula
861
What is the socket of the ankle joint formed
Ankle mortise
862
When is the ankle joint most stable
Dorsiflexion
863
What are the 3 key ligaments that support the lateral aspect of the ankle joint
Anterior talofibular Posterior talofibular Calcaneofibular
864
Where do the key ligaments of the ankle attach to
The lateral malleolus
865
Where do the ligaments of the medial aspects of the ankle attach to
They attach to the medial malleolus
866
What is the medial aspect ligaments sometimes be known as
The deltoid ligament
867
What is the subtalar joint formed by
It is formed by the articulation of the talus with the calcaneous and navicular
868
What functions does the subtalar joint aid
It is the joint that inversion and eversion take place at
869
What is inversion
Brings the sole of the foot medially
870
What is eversion
Raises the lateral border of the foot and brings the sole of the foot laterally
871
What muscles are involved in plantarflexion at the ankle
Muscles of the posterior compartment, the gastrocnemius, soleus, plantaris and posterior tibularis
872
What muscles are involved in dorsiflexion at the ankle
Muscles in the anterior compartment, tibialis anterior, extensor hallucis longus and extensor digitorum longus
873
What muscles are involved in inversion at the subtalar joint
Muscles of lateral compartment including tibialis anterior
874
What muscles are involved in eversion at the subtalar joint
Muscles of the lateral compartment and tibialis anterior
875
At which joints can arthritis occur
Hip joint Knee joint Ankle joint
876
When is a posterior dislocation of the hip usually seen
It usually occurs in a car accidents when significant force is applied to the knee when it impacts the dashboard transmitting the force up the femur and so the head is forced posteriorly out the the socket
877
What could be caused by a posterior dislocation of the hip
The acetabulum maybe fracture and injury may occur to the sciatic nerve as it sits behind the hip joint
878
How does the medial collateral ligament result in injury and what can it cause
The medial collateral ligaments can be caused by tears from a lateral blow to the knee or twisting injuries and because it is attached to the medial meniscus it can cause the meniscus to tear
879
When does an anterior cruciate ligament injury usually occur
An ACL injury usually occurs when the knee is flexed and becomes twisted
880
What causes an ankle sprain
It is usually caused by forced inversion of the foot
881
What are the 2 bones of the leg
Tibia and fibula
882
What connects the tibia and fibula
They are connected by 2 joints and a strong interosseous membrane
883
What do the distal ends of both the tibia and fibula articulate with
They articulate with the talus at the ankle joint
884
What does the tibia articulate with at each end
Proximally it articulates with the femur to form the knee joint Distally it articulates with the talus to form the ankle joint with the fibula
885
What does the proximal ends of the tibia form
It forms the medial and lateral tibial condyles
886
What are the name of the superior surfaces of the condyles
They are known as the medial and lateral tibial plateaus
887
What lies between the tibial plateaus
The intercondylar tubercles
888
Where can you find the tibial tuberosity
It projects from the upper anterior anterior surface of the tibia
889
What inserts onto the tibial tuberosity
Patellar ligament
890
What is the soleal line
Oblique ridge of bone on the posterior surface of the tibia
891
Where can you find the medial malleolus
It projects medially from the distal end of the bone
892
What does the medial malleolus form part of
Forms part of the socket for the talus
893
What is the foot adapted for
It is adapted for carrying the weight of the body and is adapted for bipedal gait
894
What are the small joints of the foot important for
He small joints of the foot are important for allowing for the foot to deform and absorb shock during walking and running over uneven ground
895
What are the tarsal bones
Talus Calcaneus Navicular Cuboid 3 cuneiforms - medial, intermediate and lateral
896
What is the hind foot
Talus and calcaneus
897
What is the mid foot
Navicular Cuboid Cuneiform
898
What is the forefoot
Metatarsals Phalanges
899
Where are metatarsophalangeal joints found
They lie between the metatarsals and the proximal phalanges
900
Where are the interphalangeal joints found
In between the phalanges
901
What ways can the foot move
Dorsiflexion Plantarflexion Inversion Eversion
902
What ways can the toes move
Flexion Extension Abduction Adduction
903
Where does the Leg lie
It lies between the knee joint and the ankle joint
904
What surrounds the leg
The deep fascia
905
What seperates the leg into anterior, lateral and posterior compartments
The intramuscular septa
906
How many muscles make up the anterior compartment of the leg
3 muscles
907
Where do the muscles of the anterior compartment arise from
The tibia, fibula and interosseous membrane
908
What are the primary actions of the anterior compartment muscles of the leg
They primarily act as dorsiflexors of the foot at the ankle joints and extensors of the toes
909
What nerves innervate the muscles of the anterior compartment of the leg
The deep peroneal nerve
910
What are the 3 muscles of the anterior compartment of the leg
Tibialis anterior Extensor hallucis longus Extensor digitorum longus
911
Where does the tibialis anterior insert onto
It inserts onto the medial cuneiform
912
What is the role of the tibialis anterior
Dorsiflexes and inverts the foot
913
What is the role of the extensor hallucis longus
Extends the big toe Dorsiflexes the foot at the ankle
914
Where does the extensor hallucis longus insert onto
It inserts onto the distal phalanx of the big toe
915
What does the extensor digitorum longus give rise to
4 tendons
916
Where do the tendons of the extensor digitorum longus insert onto
They insert onto the distal phalanges of toes 2-5
917
What is the role of the extensor digitorum longus
The tendons extend toes 2-5 and dorsiflexes the foot
918
How many muscles make up the lateral compartment of the leg
2 muscles
919
Where do the muscles of the lateral compartment of the leg attach
They attach to the fibular
920
What is the role of the muscles of the lateral compartment of the leg
They evert the foot at the subtalar joint
921
What nerve innervates the lateral compartment muscles of the leg
They are innervated by the superficial peroneal nerve
922
What are the muscles of the lateral compartment of the leg
Peroneus longus Peroneus brevis
923
Out of the 2 lateral compartment muscles of the leg which lies must superficial
Peroneus longus
924
Where does Peroneus longus insert onto
It inserts onto the plantar surface of the medial cuneiform bone
925
Where does the Peroneus brevis insert onto
It inserts onto the base of the 5th metatarsal
926
Where do the tendons of both the Peroneus longus and brevis insert onto
They insert onto the foot
927
Where does the popliteal artery bifurcate
In the popliteal fossa
928
What does the popliteal fossa bifurcate into
It bifrucates into the anterior and posterior tibial arteries
929
Where does the anterior tibial artery run
It runs through the interosseous membrane where it enters the anterior compartment of the leg
930
What is the dorsalis pedis
It is a continuation of the anterior tibial artery
931
When does the anterior tibial artery become the dorsalis pedis
When it crosses over the anterior aspect of the ankle joint into the dorsum of the foot
932
Where is the dorsalis pedis palpable
In the foot lateral to the tendon of extensor hallucis longus
933
What arteries branch from the dorsalis pedis
Branches that travel between the metatarsals
934
What artery supplies the lateral compartment of the leg
Fibular artery
935
What is the fibular artery a branch of
The posterior tibial artery
936
What are the 2 superficial veins of the leg
The great saphenous The small saphenous
937
Where does the great saphenous vein run and where does it terminate
It runs anterior to the medial malleolus and courses up the medial aspect of the lower limb before terminating at the femoral vein in the femoral triangle
938
Where does the small saphenous vein run and where does it terminate
It travels posterior to the lateral malleolus and it courses up the posterior aspect of the leg and terminates at the popliteal vein in the popliteal fossa
939
Where does the common peroneal nerve run
The common peroneal nerve wraps around the neck of the fibula and then divides into two branches
940
What are the 2 branches of the common peroneal nerve
Superficial and deep peroneal nerve
941
What does the superficial peroneal nerve innervate
The muscles of the lateral leg
942
What does the deep peroneal nerve innervate
It innervates the muscles of the anterior leg
943
Why when the the tibia is fractured can it cause an open fracture
It can cause an open fracture due to the little subcutaneous tissue between the anterior surface of the tibia and skin
944
Why must open fractures be treated carefully
To prevent infection from entering the exposed bone
945
What is osteomyelitis
Bone infection
946
If the fibular neck is fractured what can this cause
A fracture to the fibula can cause injury to the common peroneal nerve because it wraps round the neck of the fibula
947
If the common peroneal nerve gets injured by the fractured fibula, what can be caused
Foot drop
948
What is foot drop
Foot drop is a condition due to the weakness of the anterior and lateral leg muscles, which means the leg cannot be Dorsiflexed and so the toes will drag on the floor when walking
949
Where is the pulse of the posterior tibial artery palpable
Posterior to the medial malleolus
950
Which pulse around the ankle is most easily palpable
The pulse of the dorsalis pedis
951
How many muscle layers make up the posterior compartment of the leg
2 muscle layers
952
What is the role of the muscle groups of the posterior compartment of the leg
They primarily act as plantarflexors of the foot at the ankle joint and flexors of the toes
953
What nerve innervates the muscles of the posterior compartment of the leg
Innervated by the tibial nerve
954
How many muscles make up the superficial layer of the posterior compartment of the leg
3 muscles
955
What are the 3 muscles of the posterior
Gastrocnemius Soleus Plantaris
956
Where do tendons of all 3 muscles found in the superficial layer of the posterior compartment of the leg insert onto where and via what
They insert onto the the calcaneus via the Achilles’ tendon
957
Which of the 3 muscles of the posterior compartment of the leg is the most superficial
Gastrocnemius
958
Where does the gastrocnemius attach
It attaches via the 2 heads to the distal femur
959
What is the role of the gastrocnemius
It can flex the knee in addition to plantarflexion of the foot at the ankle joint
960
What is the soleus
Large flat muscle found deep to gastrocnemius
961
Where does the soleus attach to
It attaches to the soleal line
962
What does contraction of the soleus cause and why is it important
Contraction of the soleus is causes compression of the deep veins which is important for venous return
963
Where is the plantaris muscle found close to
It is found close to the popliteal fossa
964
How many muscles make up the deep layer of the posterior compartment of the leg
4 muscles
965
What are the 4 muscles of the deep layer of the posterior compartment of the leg
Popliteus Tibialis posterior Flexor hallucis longus Flexor digitorum longus
966
Where does the popliteus attach to
It attaches to the tibia and femur in the popliteal fossa
967
What does popliteus allow for
It allows for a small degree of rotation of the knee before flexion begins
968
What is the role of tibialis posterior
Plantarflexion and inversion of the foot
969
What is the role of the flexor hallucis longus
Flexes the big toe and plantarflexion of the foot
970
What does the flexour hallucis longus insert onto
It inserts onto the distal phalanx
971
What is the role of the flexor digitorum longus
Flexes the toes and plantarflexion of the foot
972
What does the flexor digitorum longus give rise to
4 tendons
973
Where do the tendons of the flexor digitorum longus insert onto
They insert onto the distal phalanges of toes 2-5
974
How many layers of muscle in the plantar aspect of the foot
4 layers
975
What nerves innervate the intrinsic muscles of the plantar aspect of the foot
Medial and lateral plantar nerves
976
What are the medial and lateral plantar nerves terminal branches of
Terminal branches of the tibial nerve
977
What is the importance of the intrinsic muscles of the plantar aspect of the foot
They work together to support the foot
978
What does the posterior tibial artery supply
It supplies the posterior compartment of the leg and sole of the foot
979
What does the posterior tibial artery give rise to
The fibular artery
980
What does the fibular artery supply
The lateral compartment of the leg
981
What does the posterior tibial artery become in the plantar aspect of the foot
Dorsalis pedis artery
982
What does the posterior tibial artery bifurcate into to supply the sole of the foot
Medial and lateral plantar arteries
983
What veins unite to form the popliteal vein
The posterior tibial The anterior tibial The fibular
984
Where does the dorsal venous network drain to medially and laterally
The dorsal venous network drains medially to the great saphenous vein The dorsal venous network drains laterally to the small saphenous vein
985
What does the small saphenous vein join with and where
It joins with the the popliteal vein in the the popliteal fossa
986
What does the great saphenous vein join with and where
It joins with the femoral vein in the femoral triangle
987
What nerve innervates the muscle of the posterior compartment of the leg and the plantar surface of the foot
The tibial nerve
988
When the tibial nerve enters the sole of the foot what does it bifurcate into
Medial and lateral plantar nerves
989
What nerves enter the foot
Digital nerves
990
What nerves innervate the skin of the foot
Tibial and common peroneal nerves
991
What nerve innervates most of the skin on the plantar surface of the skin
The tibial nerve
992
What nerve innervates the skin over the anterolateral leg and dorsum of the foot
The common peroneal nerve
993
What area of skin is innervated by the femoral nerve
The anterior thigh and anteromedial leg via the saphenous nerve
994
What nerve innervates the medial thigh
Obturator nerve
995
What area of skin is innervated by the common peroneal nerve
The anterolateral leg and dorsum of the foot
996
What nerve innervates the lower anterolateral leg and most of the dorsum of the foot
Superficial peroneal nerve
997
What area of the skin is innervated by the Deep peroneal nerve
1st interdigital cleft
998
What nerve innervates the skin on the sole of the foot
Tibial nerve
999
Where does L1 innervate
The region over the inguinal ligament
1000
Where does L2 innervate
The upper half of the anterior thigh
1001
Where does L3 innervate
The lower anterior thigh and medial aspect of the knee
1002
Where does L4 innervate
On the anterior surface of the lower limb Lateral aspect of the lower thigh, knee and upper leg Extends to cover the anterior knee, anteromedial leg, the dorsum of the medial aspect of the foot, skin over the dorsum and plantar surface of the big toe
1003
Where does L5 innervate
Anterior surface of the lower limb Lower 2/3 of the leg Dorsum of the middle of the foot and the dorsum of the toes 2-4 Skin on the sole of the foot Buttock to upper leg
1004
Where does S1 innervate
Posteriorly the nerve innervates the vertical strip of skin in the middle of the thigh Lateral part of the posterior leg Lateral aspect of the ankle Lateral aspect of the dorsum and sole of the foot Skin over the dorsum and plantar surface of the little toe
1005
Where is sensation tested for L1
Region over the inguinal ligament
1006
Where is sensation tested for L2
Upper anterior thigh
1007
Where is sensation tested for L3
Medial aspect of the knee
1008
Where is sensation tested for L4
Anteromedial leg
1009
Where is sensation tested for L5
Anterolateral leg
1010
Where is sensation tested for S1
5th digit Lateral side of the foot
1011
What is DVT
Deep vein thrombosis is when a clot develops in the deep veins of the leg so the venous return is impaired
1012
What are signs and symptoms of a DVT
Swelling Pain Redness Warmth
1013
Why is it important to recognise a DVT
The clot could migrate into the pulmonary circulation and cause pulmonary embolism
1014
What is compartment syndrome and what is it caused by
Compartment syndrome is increased pressure in one of the compartments of the leg caused by the swelling in a compartment but the deep fascia and intramuscular septa not been able to stretch the muscle, vessels and nerves get compressed causing pain
1015
If compartment syndrome isn’t sorted what could happen
Ischaemia and infarction of the tissues
1016
What can be done to relieve compartment syndrome
Fasciotomy
1017
What can cause a tear to the Achilles’ tendon
Sudden force and forceful plantarflexion of the ankle
1018
Signs and symptoms of Achilles’ tendon rupture
Pain Altered gait Cannot plantarflex the foot to push off from the ground
1019
Where does gout typically present
The first metatarsophalangeal joint
1020
Signs and symptoms of gout
Joint is swollen, red and warm Extreme pain
1021
What is plantar fasciitis
Inflammation of the plantar aponeurosis
1022
What does plantar fasciitis caused
Pain on the plantar surface