Musculoskeletal II (MSK II) Flashcards
What is the Upper Extremity?
is everything from the clavicle down to the fingers.
List all of the joints included in upper extremity
- Shoulder girdle
- GH
- Elbow
- Forearm
- Wrist
- hand
What is the apart of the Joint-Shoulder girdle?
- Clavicle
- Sternum
- Scapula (false?)
- 3 true joints one false
What is the difference b/t true & false joints
true joints - bone on bone contact
false joints - see motion but not bone on bone contact
What is the Bones SG-Clavicle?
- Aka the collar bone
- S shaped
- Holds upper limb in position
- Circular at sterno-clavicular joint (SC)
- Broad at acromi-clavicular joint (AC)
- Latin ”little key” (key to holding whole arm up)
What is the Bones SG-Sternum?
- Aka the breast bone
- The sternum in the sc joint
- Most of the motion happens here
(b/c)* Lots of ligaments found here
What is the Bones SG-Scapula?
- AKA the shoulder blade (think: “crow wing”)
- Very thin
- Does not actually attach to chest wall, floats over it
- Acromion process attaches to the clavicle to become the acromioclavicular joint
- Area for shoulder separation
What is the Joint-GH?
- Scapula
- Humerus
- G stands for glenoid fossa of the scapula H stands for the humerus
- Ball and socket joint
(glenohumeral joint)
What is the Bones GH-Scapula?
- Glenoid fossa of the scapula
- Glenoid labrum found here.
(helps it to be a)* Ball and socket joint - Lots of movement
- Area where you can
find rotator cuff muscles
What is the Bones GH-Humerus?
- Long bone
- Head (ball) sits into the glenoid fossa (socket)
- Long head of biceps brachii found in the intertubercular groove or “bicipital groove” (b/t the GT & LT)
What is the Joint-Elbow?
- Humerus
- Ulna
- Radius (small)
(1st 2 really involved in action) - Hinge joint
- Main joint forming the elbow is the humerus and elbow
- Only flexion and extension happens here
- The radius is just along for the ride
What is the Bones elbow-Humerus/Ulna?
- During flexion and extension the trochlear notch (of Ulna) moves around the trochlea (of Humerus).
- In extension, the olecranon process (of Ulna) fits into the olecranon fossa (of Humerus)
- Olecranon foramen? (allows hyperextension)
(ulna creates the elbow of your elbow)
What is the Joint-Forearm?
- Radius
- Ulna
- Humerus (small)
- Supination and pronation happen here
- Mainly at the proximal and distal radio-ulnar joints
- The humerus capitulum is present to keep the radius in place while pivoting
- During these actions the ulna stays put and the radius is the only bone that moves
What are the Bones Forearm-Radius/Ulna?
- Capitulum-radial head (pivot)
- Proximal and distal radioulnar, radius-ulna
All these joints allow pronation and supination
Which moves? The radius or the ulna?
the radius (criss-crosses)
- ulna stays put
What are the Actions-Shoulder?
- Elevation of right scapula
- Depression of scapula
- Adduction of scapula (retraction)
- Abduction of scapula (protraction)
Circumdunction has…
all actions but rotation
What are the Actions-GH?
- Flexion
- Extension
- Hyperextension
- Lateral rotation
- Medial rotation
- Abduction
-Adduction - Circumduction
What are the Actions-Elbow?
- Flexion
-Extension
What are the Actions-Forearm?
- Supination (palm anterior)
- Pronation (palm posterior)
What is apart of the Anterior Shoulder?
- Serratus Anterior (like a serrated knife - for protection)
- Pectoralis Major
- Pectoralis Minor (more scapula - concaves chest)
- Anterior Deltoid (shaped like delta)
What is apart of the Posterior Shoulder?
- Trapezius- 3 Fiber directions (4 sided)
- Rhomboid Major and Minor
- Levator Scapulae (lifts scapula - elevation)
- Supraspinatus
- Infraspinatus
- sup & inf to diff parts of the kidney
- Teres Major and Minor
What is apart of the Rotator Cuff?
Rotator cuff muscles S.I.T.S
- Supraspinatus
- Infraspinatus
- Teres Minor
- Subscapularis
What is the Rotator Cuff?
- Rotator cuff muscles are a group of 4 muscles
- Creates strength and stability during GH motion
- Tendons join over head of humerus
What is the Pec Major action?
GH Flexion, int rot
What is the Pec Minor action?
Shoulder protraction
What is the Serratus Ant action?
Shoulder protraction
What is the Deltoid action?
GH Abduction
What does the Anterior Shoulder include?
Pec Major
Pec Minor
Serratus Ant
Deltoid
What is the Trapezius action?
Shoulder retraction
What is the Rhomboids action?
Shoulder retraction
What is the Levator scapulae action?
Shoulder elevation
What is the Teres Major action?
GH Int rot
What does the Posterior Shoulder include?
Trapezius
Rhomboids
Levator scapulae
Teres Major
What is the Supraspinatus action?
GH Abduction
What is the Infraspinatus action?
GH Ext rot
What is the Teres Minor action?
GH Ext rot
What is the Subscapularis action?
GH Int rot
What does the Rotator Cuff include?
Supraspinatus
Infraspinatus
Teres Minor
Subscapularis
What is apart of the Anterior Arm?
- Biceps Brachii
- Coracobrachialis
- Brachialis
What is apart of the Posterior Arm?
- Triceps Brachii
- Teres Major and Minor
- Latissimus Dorsi
What are the action of the Biceps Brachii?
GH flexion, elbow flexion, supination
What are the action of the Coracobrachialis?
GH flexion
What are the action of the Brachialis?
Elbow flexion
What are the action of the Triceps Brachii?
GH extension, ELBOW EXTENSION
What are the action of the Latissimus dorsi?
GH extension, int rot, Add
What are the action of the Teres major?
GH extension, int rot, Add
What are the action of the Teres minor?
GH ext rot, Add
Describe the blood supply route
Subclavian (clavicle) –> Axillary (pec - ) –> Brachial (arm/humerus) –> Radial & Ulnar –> Sup & deep palmar arches
Which would you use to test pulse in wrist?
radial
What is the Nerves-Brachial Plexus?
The brachial plexus is a group of nerves that serve the entire upper extremity
* Peripheral nerves
* Comes from spinal cord
* C5-T1
What is the Nerves-Brachial Plexus separation of parts?
- Roots (from SC)*
- Trunks (Large)
- Divisions
- Cords (Named around artery)*
- Terminal nerves*
What is the Nerves-Brachial Plexus from start to finish?
- Roots
- Trunks
- Divisions
- Cords
- Terminal Branches
What nerves are apart of the Brachial Plexus-Terminal Branches?
- Musculocutaneous
- Median
- Ulnar
- Radial
- Axillary
What is the area that the Musculocutaneous nerve serves?
Anterior arm
What is the area that the Median nerve serves?
Anterior Forearm area
What is the area that the Ulnar nerve serves?
Ulnar region
What is the area that the Radial nerve serves?
Posterior arm & forearm area
What is the area that the Axillary nerve serves?
Deltoid area
What is an example muscle of the Musculocutaneous nerve?
Biceps brachii
What is an example muscle of the Median nerve?
Flexor digitorum sup
What is an example muscle of the Ulnar nerve?
Flexor carpi ulnaris
What is an example muscle of the Radial nerve?
Triceps brachii, extensor digitorum
What is an example muscle of the Axillar nerve?
deltoid
What are the Bones Forearm-Humerus?
- Medial epicondyle
- Lateral epicondyle
What is apart of the Joint-Wrist and Hands?
- Wrist= carpals
- Hand= metacarpals
- Fingers= phalanges
Wrist =
carpals
Hand =
metacarpals
Fingers =
phalanges
What are the Bones Wrist-Radius/Carpals?
- The carpal (wrist) bones, only attach to the radius, so when the radius supinates or pronates, so does the palm
What are the Bones Wrist-Radius/Carpals START to FINISH?
- Scaphoid
- Lunate
- Triquetrum
- Pisiform
- Trapezium
- Trapezoid
- Capitate
- Hamate
What are the Bones Hand- Metacarpals/Phalanges?
- Metacarpals are numbered
- Phalanges are numbered and designated proximal, intermediate, and distal
- The thumb is different, only proximal and distal
(start counting with thumb)
What are the Actions-Wrist and Fingers?
- Flexion/Extension of wrist
- Flexion/Extension of fingers
- Radial/Ulnar Deviation of wrist
What are the Actions-Forearm?
- Supination (palm anterior)
- Pronation (palm posterior)
What are the Actions-Hand (Thumb and Pinky)?
- Abduction/Flexion of thumb
- Abduction/Flexion of pinky
- Opposition (both)
What is apart of the Anterior Forearm?
- Flexor carpi ulnaris
- Flexor carpi radialis
- Palmaris Longus
- Flexor digitorum superficialis
- Flexor digitorum profundus
- Pronator teres
- Pronator quadratus *
What is apart of the Posterior Forearm?
- Extensor carpi radialis longus
- Extensor carpi radialis brevis
- Extensor carpi ulnaris
- Extensor digitorum
- Supinator
What is the action of the Anterior compartment muscle (wrist & fingers)?
flexion
What is the action of the Posterior compartment muscle (wrist & fingers)?
extension
What is the action of the Flexor carpi ulnaris & Extensor carpi ulnaris muscle (wrist & fingers)?
ulnar deviation
What is the action of the Flexor carpi radialis & Extensor carpi ralialis muscle (wrist & fingers)?
Radial deviation
What is the action of the Biceps brachii, supinator muscle (forearm)?
supination
What is the action of the Pronator teres, pronator quadratus muscle (forearm)?
pronation
What is the action of the Thenar eminence muscle (thumb & pinky)?
Abduction, flexion, opposition of thumb
What is the action of the Hypothenar eminence muscle (thumb & pinky)?
Abduction, flexion and opposition of pinky
What is the Carpal Tunnel muscle group created by?
- Carpal bones (*attached to radius b/c move for suponation)
- Flexor retinaculum
What are the muscles that pass through the Carpal Tunnel muscle group?
- Flex. Dig. Sup
- Flex. Dig. Prof.
- Flex. Pollicis longus
What is a nerve that pass through the Carpal Tunnel muscle group?
- Median
What is an artery that pass through the Carpal Tunnel muscle group?
- None!
What is the blood supply pathway?
Subclavian (clavicle) –> Axillary (pec -) –> Brachial (arm/humerus) –> Radial or Ulnar –> Sup & deep palmar arched
What is the artery that is for pulse within the blood supply?
radial
What are the Nerves-Brachial Plexus separation of parts?
- Roots (from SC)
- Trunks (Large)
- Divisions
- Cords (Named
around artery) - Terminal nerves