Elbow, Anterior Forearm Muscles Flashcards
OINAs (32 cards)
Brachioradialis Action
- flex elbow in midpronated position
- assist to pronate and supinate forearm when movements are restricted/from end range
Brachioradialis PA
lateral supra-epicondylar ridge of humerus
Brachioradialis DA
distal lateral radius (proximal to styloid process)
Brachioradialis Innervation
radial nerve (C5, C6, C7)
Anconeus Action
- assist triceps w/ forearm extension
- stabilize elbow joint
- may abduct ulna during pronation
Anconeus PA
lateral epicondyle of humerus
Anconeus DA
lateral olecranon
Anconeus Innervation
radial nerve (C7, C8, T1)
Supinator Action
supinate forearm
Supinator PA
lateral epicondyle of humerus, radial collateral ligament (RCL), annular ligament
Supinator DA
lateral radius
Supinator Innervation
PIN of radial nerve (C7, C8)
Pronator Teres Action
- pronate forearm
- assists to flex elbow
Pronator Teres PA
medial epicondyle of humerus (common flexor tendon), coronoid process
Pronator Teres DA
middle radius
Pronator Teres Innervation
median nerve (C6, C7)
Flexor Carpi Radialis Action
- flex wrist
- radial deviation (abduct hand at wrist)
Flexor Carpi Radialis PA
medial epicondyle of humerus (common flexor origin)
Flexor Carpi Radialis DA
bases of 2nd and 3rd metacarpals
Flexor Carpi Radialis Innervation
median nerve (C6, C7)
Palmaris Longus Action
- tense palmar aponeurosis
- flex wrist
Palmaris Longus PA
medial epicondyle of humerus (common flexor origin)
Palmaris Longus DA
flexor retinaculum, palmar aponeurosis
Palmaris Longus Innervation
median nerve (C7, C8)