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Forearm Flexor Muscles

Muscle	Origin	Insertion	Nerve	Action	Notes
pronator teres	medial epicondyle, coracoid process	half way down front of radius	median	pronates forearm	median nerve passes between two heads
flexor carpi radialis	medial epicondyle	2nd and 3rd metacarpals	median	flexes and abducts wrist
palmaris longus	medial epicondyle	palmar aponeurosis	median	flexes wrist	not always present
flexor carpi ulnaris	medial epicondyle, olecranon, posterior border of ulna	pisiform bone	ulnar nerve	flexes and adducts wrist
flexor digitorum superficialis	medial epicondyle, coracoid process, front of upper part of shaft of radius	middle phalanges of fingers	median	flexes fingers	splits into 4 tendons before passing flexor retinaculum, splits at phalanges to allow flexor digitorum profundus to pass through
flexor digitorum profundus	medial and anterior aspects of shaft of ulna and interosseous membrane	distal phalanges of fingers	ulnar nerve median	flexes distal phalanges	passes through tendons of flexor digitorum superficialis
flexor pollicis longus	anterior surface of radius	distal phalanx of thumb	median	flexes thumb
pronator quadratus	distal end of shaft of ulna	distal end of shaft of radius	median	pronates

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