Elbow, Shoulder & Scapula Anatomy Flashcards
Elbow flexion
Biceps/Brachialis innervated by musculocutaneous nerve & Brachioradalis innervated by radial nerve
Biecps
Origin: Coracoid process & supraglenoid tubercle
Insertion: Radial tuberosity
Fx: Elbow flex w forearm supinated
Brachialis
Origin: Distal 2/3 humerous
Insertion: ulnar tuberosity
Fx: Elbow flex w forearm pronated
Brachioradalis
Origin: Supracondylar ridge
Insertion: Distal radius
Fx: Elbow flex w forearm neutral
Elbow Extension
Triceps/Anconeus innervated by radial nerve
Triceps
Origin: Long head - infraglenoid tuberosity, Lateral head - posterior humerus & med head - distal to lateral head
Insertion: Olecranon
Fx: Elbow exten
Anconeus
Origin: Lat epi & capsule of elbow joint
Insertion: Olecranon & upper 1/4 of dorsal ulna
Fx: elbox exten
Rotator Cuff Muscles
Supscapularis, suprapinatus, infrapinatus & teres minor
Supscapularis - subscapular nerve innervation
Origin: ant surface of scap
Insertion: Lesser tuberosity
Fx: In rot
Supraspinatus - suprascapular nerve innervation
Origin: Supraspinatus fossa
Insertion: Greater tuberosity
Fx: aBduction/flex
Infraspinatus - suprascapular nerve innervation
Origin: infraspinatus fossa
Insertion: greater tuberosity
Fx: ex rot
Teres Minor - axillary nerve innervation
Origin: axillary border of scap
Insertion: greater tuberosity
Fx: ex rot
Shoulder Flexion Muscles
Ant deltoid & coracobrachalis & supraspinatus
Ant deltoid - axillary nerve innervation
Origin: Clavical
Insertion: Deltoid Tuberosity
Fx: Shoulder flex
Coracobrachalis - musculocutaneous nerve innervation
Origin: coracoid process
Insertion: medial aspect of deltoid
Fx: Shoulder flex