Anatomy Flashcards
Spinal curvatures
Cervical lordosis (2y) Thoracic kyphosis (1y) Lumbar lordosis (2y) Sacral kyphosis (1y)
First palpable spinous process
C7 - vertebra prominens
Palpable osteology of the posterior pelvis
Iliac crests
Posterior superior iliac spines
Sacrotuberous ligament
Between sacrum and ischial tuberosity
Sacrospinous ligament
Between sacrum and ischial spine
Nervous supply of gluteus maximus
Inferior gluteal nerve
Nervous supply of gluteus medius and gluteus minimus
Superior gluteal nerve
Inferior gluteal neurovascular bundle
Inferior gluteal
- artery
- vein
- nerve
Superior gluteal neurovascular bundle
Superior gluteal
- artery
- vein
- nerve
Root of sciatic nerve
L4-S3
Spliting of sciatic nerve
Tibial nerve (medial) Common fibular (lateral)
Root of pudenal nerve
S2-4
Posterior cutaneous nerve of thigh
S1-3
Supplies skin over the posterior thigh
Superficial muscles of the gluteal region
Gluteus maximus
Gluteus medius
Gluteus minimus
Tensor fascia latae
Deep muscles of the gluteal region
Piriformis
Obturator internus
Gemelli (inferior and superior)
Quadratus femoris
Iliotibial tract
Runs from ASIS to the lateral tibial condyle
Role of the superficial muscles of the gluteal region
Extensors, abductors, medial rotators of the thigh
Trendelenburg Gait
Abnormal gait
Found in those with weak abductor muscles of the hip (supplied by superior gluteal nerve)
- No motor function of these muscles
Role of the deep muscles of the gluteal region
Lateral rotators of the thigh
‘Hip stabilisers’
They hold the head of the femur in the acetabulum: hold the hip joint in place
Entry point of the nerves supplying the pelvis and perineum
Greater (pelvis) and lesser (perineum) sciatic foramen
- These are made up of the ligaments and the greater and lesser sciatic notches
Gluteal region and injections
Divided into four quadrants
Administered to the outer upper quadrant
Sciatic Nerve Supply
Posterior thigh
All leg and foot muscles
Most of the skin
= via the tibial and common fibular branches
Sciatic nerve and greater sciatic foramen
The most lateral exiting structure
Usually exits inferior to piriformis
Splitting of sciatic nerve
Usually occurs in the distal 1/3rd if the thigh
Superior Boundary of the Femoral Traingle
Inguinal Ligament
Lateral Border of the Femoral Triangle
Medial border of sartorius
Medial Border of the Femoral Triangle
Lateral border of abductor longus
Floor of the Femoral Triangle
Iliopsoas and pectineus
Roof of the Femoral Triangle
Deep fascia
Span of the inguinal ligament
ASIS to the pubic tubercle
Inguinal ligament
Thickened inferior edge of the oblique aponeurosis
Contents of femoral triangle (L –> M)
Femoral nerve, artery and vein
Deep inguinal nodes
Compartments of the Thigh
Anterior, Medial, Posterior
Compartments of the Leg
Anterior, Lateral, Posterior
Flexors of the thigh
Pectineus
Iliopsoas
Sartorius
Extensors of the thigh
Quadriceps femoris
Nerve supply of pectineus
Femoral Nerve
Nerve supply of Iliopsoas
Femoral Nerve
Nerve supply of sartorius
Femoral Nerve
Nerve supply of quadratus femoris
Femoral Nerve
Supply of the psoas component of the iliopsoas muscle
L1-L3
Muscles in the anterior compartment of the thigh
Pectineus
Iliopsoas
Sartorius
Quadriceps Femoris
Muscles in the medial compartment of the thigh
Adductor longus Adductor brevis Adductor magnus Gracilis Obturator externus
Adductors of the thigh
Adductor longus Adductor brevis Adductor magnus Gracilis Obturator externus
Split of adductor magnus
Adductor minimus
Hamstring portion
Nerve supply of muscles in the medial compartment of the thigh (except hamstring portion of adductor magnus)
Obturator nerve (L2-4)
Nerve supply of the hamstring portion of adductor magnus
Tibial Nerve
Muscles of the Posterior Compartment of the Thigh
Semitendinous
Semimembranosus
Biceps Femoris
Split of biceps femoris
Has a long and short head
Extensors of thigh and flexors of the leg
Semitendinous
Semimembranosus
Biceps Femoris
Nerve supply of muscles in the posterior compartment of the thigh (except short head of biceps femoris)
Tibial division of sciatic nerve (roots L5-S2)
Nerve supply of short head of biceps femoris
Common fibular division of sciatic nerve
Muscles of the Anterior Compartment of the Leg
Tibialis anterior
extensor digitorum longus
extensor hallucis longus
fibularis tertius
Nerve supple of muscles of the anterior compartment of the leg
Deep fibular nerve (L4-5)
Location of the common fibular nerve relative to the knee
Lateral to the knee
Highly superficial
Splits into the deep and superficial branches
Muscles of the Lateral Compartment of the Leg
Fibularis longus
Fibularis brevis
Dorsiflexors of the ankle and extensors of toes
Tibialis anterior
extensor digitorum longus
extensor hallucis longus
fibularis tertius
Evert foot and weaklr plantarflex ankle muscles
Fibularis longus
Fibularis brevis
Muscles of the Posterior Compartment of the Leg
Gastrocnemius Soleus Plantaris Popliteus Flexor hallucis longus Flexor digitorum longus Tibialis posterior
Superficial muscles of the posterior compartment of the leg
Gastrocnemius
Soleus
Plantaris
Nerve supply of the superficial muscles of the posterior compartment of the leg
Tibial Nerve
Deep muscles of the posterior compartment of the leg
Popliteus
Flexor hallucis longus
Flexor digitorum longus
Tibialis posterior
Nerve supply of the deep muscles of the posterior compartment of the leg
Tibial Nerve
Plantarflexors of the ankle
Gastrocnemius
Soleus
Plantaris
Flexors of toes and plantarflexors of ankle
Popliteus
Flexor hallucis longus
Flexor digitorum longus
Tibialis posterior
Hip Joint (type)
Ball and socket joint
Multiaxial
Synovial Joint
Actions of the hip joint
Flexion-extension
Abduction-adduction
Medial-lateral rotation
Circumduction
Ligaments of the hip joint
Iliofemoral
Pubofemoral
Ischiofemoral
Ligementum teres
Doesn’t stabilise the neck of femur
Carries the artery to the head of femur
Blood Supply of Hip Joint
Medial and lateral circumflex femoral arteries
These anastomose together
Artery to the head of femur
Usually branch of obturator artery
Knee Joint Type
Hinge joint
Articulations of the knee joint
3
2 are femerotibial and 1 is femeropatellar
- Between the tibial condyles and femur and patella and femur
Actions of the Knee Joint
Flexion-extension
Some medial-lateral rotation can occur if the knee is flexed
Stabiliser of the knee joint
Quadriceps femoris group
Extracapsular ligaments of the knee
Patellar ligament
Lateral (fibular) collateral ligament
Medial (tibial) collateral ligament
Intraarticular ligaments of the knee
Anterior and posterior cruciate ligament
- Often damaged, cross over each other
Menisci ligaments of the knee
Crescent shaped and made of fibrocartilage
- Usually medial and lateral
Superolateral boundary of the popliteal fossa
Biceps femoris
Inferior boundary of the popliteal fossa
Gastrocnemius
Superomedial boundary of the popliteal fossa
Semimembranosus
Roof of the popliteal fossa
Popliteal fascia
Contents of the popliteal fossa
Occurs posterior to the knee
- Contains lots of fat, terminal small saphenous vein popliteal vessels and tibial and common fibular nerves
Calcaneal Tendon
= achilles tendon
- It is the thickest and strongest tendon of the body
Contents of calcaneal tendon
Gastrocnemius
Soleus
Attachment of the calcaneal tendon
Calcaneal tuberosity of the calcaneus
Superficial lymphatics
Follow to the saphenous vein
Drain to superficial inguinal lymph nodes –> external iliac nodes
Deep lymphatics
Follow the deep veins
Popliteal lymph nodes –> deep inguinal nodes –> external iliac nodes
Plane movement
One plane of motion
Ellipsoid movement
Two planes of motion
Joints of the Upper Limb
Sternoclavicular Acromioclavicular Glenohumeral Humeroulnar Radiohumeral Proximal radioulnar joint Distal radioulnar joint Radiocarpal
Sternoclavicular joint type
Saddle type
Acromioclavicular joint type
Plane type joint
Glenohumeral joint type
Ball and socket - similar to the hip
Elbow joint components and type
Radiohumeral
Humeroulnar
Hinge type joint
Radiohumeral joint type
Limited ball and socket joint
- limitation = annular ligament
Proximal radioulnar joint type
Pivot type
Distal radioulnar joint type
Pivot type
Radiocarpal joint type and contact points
Ellipsoid
Contact between the scaphoid and lunate carpal bones
Supination and the radius/ulna
The radius moves over the ulna
Muscle involved is the supinator
Adduction
Bring something toward the body midline
Abduction
Taking something away from the body midline
Joints of the Hand
PIP
DIP
CMC joints
1st CMC type and action
Saddle type
Allows for the thumb to have 90o rotation
5th MCP type
Condyloid
Function of the axioappendicular muscles
Join the upper limb to the skeleton
Only point of contact between the upper limb and the skeleton
Sternoclavicular joint
Axio-appendicular muscles
Trapezius Serratus Anterior Rhomboid major and minor Latissimus dorsi Subclavius Levator scapulae
Trapezius attachment and innervation
CN XI (accessory nerve) Attaches to thoracic and cervical vertebra, stretches across to the scapula
Serratus anterior innervation
Long thoracic nerve
Rhomboid minor and major innervation
Long thoracic nerve
Components of trapezius
Ascending, descending and transverse components
Latissimus dorsi function and innervation
Elevates the scapula
Dorsal scapular nerve
Innervation of the subclavius and levator scapulae
Dorsal scapular nerve
Function of rotator cuff muscles
Hold the head of the humerus in the glenoid fossa with 1/3rd of the humeral head in contact with the glenoid fossa at any one time
Attachment of the rotator cuff muscles
Greater or lesser tuberosity
Rotator cuff muscles
Supraspinatus
Infraspinatus
Teres Minor
Subscapularis
Rotator cuff muscles that attach to the greater tuberosity
Supraspinatus
Infraspinatus
Teres Minor
Rotator cuff muscles that attach to the lesser tuberosity
Subscapularis
Compartments of the arm and forearm
Anterior and posterior
Clinical compartment of the arm
Lateral
Anterior compartment of the arm - muscles
Biceps brachii
Brachialis
Coracobrachialis
Anterior compartment of the arm - action
Flexion and extension of the arm and forearm
Anterior compartment of the arm - innervation
Musculocutaneous nerve
Posterior compartment of the arm - muscles
Triceps brachii - three heads
Heads of triceps brachii
Medial, lateral and long
Posterior compartment of the arm - action
Extend the arm and forearm
Posterior compartment of the arm - innervation
Radial nerve
Muscles of the anterior compartment of the forearm - superficial layer
Pronator teres
Flexor carpi radialis
Flexor carpi ulnaris
Palmaris longus
Muscles of the anterior compartment of the forearm - intermediate layer
Flexor digitorum superficialis
–> attaches to the intermediate phalanx
Muscles of the anterior compartment of the forearm - deep layer
Pronator quadratus
Flexor pollicis longus
Flexor digitorum profundus
–> attaches to the distal phalanx
Origin of the anterior compartment muscles of the forearm
Medial epicondyle
Innervation of all except:
Flexor carpi ulnaris (superficial)
Medial 1/2 of flexor digitorum superficialis
Median nerve
Innervation of
Flexor carpi ulnaris (superficial)
Medial 1/2 of flexor digitorum superficialis
Ulnar nerve
Actions of the anterior compartment muscles
Flexion of the wrist and digits
Pronation, abduction and adduction of the wrist
Posterior compartment of the forearm - innervation
Radial nerve
Actions of the posterior compartment of the forearm muscles
Extension of the wrist and digits
Supination, adduction and abduction of the wrist
Posterior compartment of the forearm - superficial layer
Brachioradialis Extensor carpi radialis longus Aconeus Extensor carpi radialis brevis Extensor digiti minimi Extensor carp ulnaris Extensor digitorum
Posterior compartment of the forearm - deep layer
Supinator Extensor indicis Abductor pollicis longus Extensor pollicis brevis Extensor pollicis longus
Eminences in the leg
Thenar eminence
Hypothenar eminence
Location of the thenar eminence
Below the thumb
Innervation of the muscles in the thenar eminence
Recurrent branch of the median nerve
Muscles of the thenar eminence
Adductor pollicis brevis
Flexor pollicis brevis
Opponens pollicis
Innervation of the muscles in the hypothenar eminence
Deep branch of the ulnar nerve
Muscles of the hypothenar eminence
Abductor digiti minimi
Flexor digiti minimi brevis
Opponens digiti minimi
Two groups of intrinsic muscles
Lumbricals
Interossi
Function of the lumbricals
Intrinsic muscles of the hand
Flex the MCP joints and extend the IP joints
Attachment of the lubricals
Tendons of flexor digitorum profundus
Number of lumbricals
4
Innervation of 1st and 2nd (lateral) lumbricals
Median nerve
Innervation of 3rd and 4th (medial) lumbricals
Ulnar nerve
Number of interossei
7
Divide of interossei
4 Dorsal interossei - abduction of the digits
3 Palmar interossei - adduction of the digits
Function of the interossei
Abduction and adduction of the digits
Innervation of the interossei
Ulnar nerve
Carpal Tunnel Boundaries
Flexor retinaculum and the carpal bones
Contents of the Carpal Tunnel
Flexor digitorum superficialis
Flexor digitorum profundus
Flexor pollicis longus
Median nerve
Carpal Tunnel Syndrome
Compression of the median nerve
= weakness of the thenar muscles
–> numbness in digits 1-3 and lateral half of 4
Origin of plexuses
Anterior rami
Origin of brachial plexus
C5-T1
Passes through the axilla into the median arm
Association of the nerve cords of the brachial plexus
Brachial artery
Order of brachial plexus
Roots > Trunks > Divisions > Cords > Nerves
Trunks of the brachial plexus
C5-6 –> Superior
C7 –> Middle
C8-T1 –> Inferior
Cords
Medial
Lateral
Posterior
Nerves which come from the brachial plexus
Musculocutaneous Axiallary Radial Median Ulnar
Dermatomes which supply the upper limb
C5-8 and T1
Anastamoses of the arteries of the upper limb
Elbow - flexion pinches the vessels
Scapular
Vena comitantes
Paired nerves that use arterial pulsations to maintain venous return