Forearm - Anterior, Lateral, Posterior Fascial Compartment

Pronator Teres - Humeral Head

Medial epicondyle of humerus

Lateral aspect of shaft of radius

Median nerve

Pronation and flexion of forearm

Pronator Teres - Ulnar Head

Medial border of coronoid process of ulna

Flexor carpi radialis

Medial epicondyle of humerus

Bases of second and third metacarpal bones

Median nerve

Flexes and abducts hand at wrist joint

Palmaris longus

Medial epicondyle of humerus

Flexor retinaculum and palmar aponeurosis

Median nerve

Flexes hand

Flexor Carpi Ulnaris - Humeral Head

Medial epicondyle of humerus

Pisiform bone, hook of the hamate, base at fifth metacarpal bone

Ulnar nerve

Flexes and adducts hand at wrist joint

Flexor Carpi Ulnaris - Ulnar Head

Medial aspect of olecranon process and posterior border of ulna

Flexor Digitorum Superficialis - Humeroulnar Head

Medial epicondyle of humerus; medial border of coronoid process of ulna

Middle phalanx of medial four fingers

Median nerve

Flexes middle phalanx of fingers and assists in flexing proximal phalanx and hand

Flexor Digitorum Superficialis - Radial Head

Oblique line on anterior surface of shaft of radius

Flexor pollicis longus

Anterior surface of shaft of radius

Distal phalanx of thumb

Anterior interosseous branch of median nerve

Flexes distal phalanx of thumb

Flexor digitorum profundus

Anteromedial surface of shaft of ulna

Distal phalanges of medial four fingers

Ulnar (medial half) and median (lateral half) nerves

Flexes distal phalanx of fingers; then assists in flexion of middle and proximal phalanges and wrist

Pronator quadratus

Anterior surface of shaft of ulna

Anterior surface of shaft of radius

Anterior interosseous branch of median nerve

Pronates forearm

Brachioradialis

Lateral supracondylar ridge of humerus

Base of styloid process of radius

Radial nerve

Flexes forearm atridge of humerus elbow joint; rotates forearm to the midprone position

Extensor carpi radialis longus

Lateral supracondylar ridge of humerus

Posterior surface of base of second metacarpal bone

Radial nerve

Extends and abducts hand at wrist joint

Extensor carpi radialis brevis

Lateral epicondyle of humerus

Posterior surface of base of third metacarpal bone

Deep branch of radial nerve

Extends and abducts hand at wrist joint

Extensor digitorum

Lateral epicondyle of humerus

Middle and distal phalanges of medial four fingers

Deep branch of radial nerve

Extends fingers and hand

Extensor digiti minimi

Lateral epicondyle of humerus

Extensor expansion of little finger

Deep branch of radial nerve

Extends metacarpal phalangeal joint of little finger

Extensor carpi ulnaris

Lateral epicondyle of humerus

Base of fifth metacarpal bone

Deep branch of radial nerve

Extends and adducts hand at wrist joint

Anconeus

Lateral epicondyle of humerus

Lateral surface of olecranon process of ulna

Radial nerve

Extends elbow joint

Supinator

Lateral epicondyle of humerus, anular ligament of proximal radioulnar joint, and ulna

Neck and shaft of radius

Deep branch of radial nerve

Supination of forearm

Abductor pollicis longus

Posterior surface of shafts of radius and ulna

Base of first metacarpal bone

Deep branch of radial nerve

Abducts and extends thumb

Extensor pollicis brevis

Posterior surface of shaft of radius

Base of proximal phalanx of thumb

Deep branch of radial nerve

Extends metacarpophalangeal joints of thumb

Extensor pollicis longus

Posterior surface of shaft of ulna

Base of distal phalanx of thumb

Deep branch of radial nerve

Extends distal phalanx of thumb

Extensor indicis

Posterior surface of shaft of ulna

Extensor expansion of index finger

Deep branch of radial nerve

Extends metacarpophalangeal joint of index finger