shoulder and upper extremity Flashcards
bony landmarks
scapula (spine, medial + lateral border, inferior angle)
AC joint
greater tubercle
coracoid process
deltoid tuberosity
medial + lateral epicondyle
acromion
SC joint
lesser tubercle
coracobrachialis
O: coracoid process
I: anteromedial surface of humerus
A: weakly flexes and adducts shoulder
biceps brachii
O: supraglenoid tubercle and coracoid process
I: head of radius
A: flexes shoulder and arm, supinates forearm
brachialis
O: anterior surface of distal 1/3 of lateral humerus
I: coronoid process of ulna
A: flexes arm
brachoradialis
O: distal 1/3 of lateral humerus
I: styloid process of ulna
A: flexes forearm
triceps
O: infraglenoid process of posterior humerus
I: olecranon process of ulna
A: extend shoulder, extend elbow
supraspinatus
O: supraspinous fossa of scapula
I: greater tubercle of humerus
A: abduct arm
infraspinatus
O: infraspinous fossa of scapula
I: greater tubercle of humerus
A: externally rotate and adduct shoulder
teres minor
O: lateral border of scapula
I: greater tubercle of humerus
A: externally rotate and adduct shoulder
subscapularis
O: subscapular fossa of scapula
I: lesser tubercle of humerus
A: internally rotate arm
anconeus
O: lateral epicondyle of humerus
I: lateral portion of olecranon process
A: extension of forearm
supinator
O: lateral epicondyle of humerus
I: lateral shaft of proximal radius
A: supination
pronator teres
O: medial epicondyle of humerus
I: lateral shaft of radius
A: pronation
pec major
O: medial clavicle, sternum, 1st 6 ribs
I: bicipital groove
A: flexion, adduction, medial rotation of humerus
pec minor
O: ribs 3-5
I: coracoid process
A: protraction of scapula
