Forearm Flexors Flashcards
Supinator
O- lateral epicondyle of the humerus
I- lateral, posterior, and anterior surfaces
N- deep branch of radial nerve
A- supinates forearm
Brachioradialis
O- proximal 2/3 of the lateral supracondylar Ridge of the humerus
I- lateral surface of the distal end of the radius
N- radial nerve
A- flexes forearm
pronator teres
O- medial epicondyle of the humerus and coronoid process of ulna
I- middle of lateral surface of radial
N- median
A- pronates and flexes forearm
flexor carpi radialis
O- medial epicondyle of humerus
I- base of second metacarpal bone
N- median nerve
A- flexes and radial deviates hand
palmaris longus
O- medial epicondyle of humerus
I- flexor retinaculum and palmar aponeurosis
N- median nerve
A- flexes hand
flexor carpi ulnaris
O- medial epicondyle of humerus, olecranon, ulna
I- pisiform, hook of hamate and 5th metacarpal
N- ulnar nerve
A- flexes hand, ulnar deviates hand
flexor digitorum superficialis
O- medial epicondyle of the humerus, coronoid process of ulna and the anterior border of the radius
I- bodies of the middle phalanges of the medial four digits
N- median nerve
A- flexes the middle phalanges of the medial four digits, proximal phalanges and hand
flexor pollicis longus
O- anterior surface of radius and interosseous membrane
I- base of the distal phalanx of the thumb
N- anterior interosseous nerve
A- flexes phalanges of thumb
flexor digitorum profundus
O- proximal 3/4th of medial and anterior surface of ulna and interrosseous membrane
I- base of distal phalanges of medial 4 digits
N- medial part is ulnar, lateral part is median
A- flexes the distal phalanges of medial four digits
pronator quadratus
O- distal, anterior surface of ulna
I- distal, anterior surface of radius
N- anterior interrosseous nerve (branch off median n)
A- pronates forearm
flexor compartment layers
superficial- brachioradialis, pronator teres, FCR, palmaris longus, FCU
Intermediate- FDS
Deep- FPL and FDP
Deepest- pronator quadratus
ulnar nerve
FCU
Medial half of FDP
radial nerve
brachioradialis