Anatomy - MOINA of the Anterior Fascial Compartment of the Forearm

origin of pronator teres

• humeral head: medial epicondyle of humerus

• ulnar head: medial border of coronoid process of ulna

insertion of pronator teres

lateral aspect of shaft of radius

innervation of pronator teres

median nerve

action of pronator teres

pronation and flexion of forearm

origin of flexor carpi radialis

medial epicondyle

insertion of flexor carpi radialis

bases of 2nd and 3rd metacarpal bones

innervation of flexor carpi radialis

median nerve

action of flexor carpi radialis

flexes and abducts hand at wrist joint

origin of palmaris longus

medial epicondyle of humerus

insertion of palmaris longus

flexor retinaculum and palmar aponeurosis

innervation of palmaris longus

median nerve

action of palmaris longus

flexes hand

origin of flexor carpi ulnaris

• humeral head: medial epicondyle of humerus

• ulnar head: medial aspect of olecranon process and posterior border of ulna

insertion of flexor carpi ulnaris

pisiform bone, hook of the hamate, base at 5th metacarpal bone

innervation of flexor carpi ulnaris

ulnar nerve

action of flexor carpi ulnaris

flexes and adducts hand at wrist joint

origin of flexor digitorum superficialis

• humeroulnar head:

  • medial epicondyle of humerus

  • medial border of coronoid process of ulna

• radial head: oblique line on anterior surface of shaft of radius

insertion of flexor digitorum superficialis

middle phalanx of medial 4 fingers

innervation of flexor digitorum superficialis

median nerve

action of flexor digitorum superficialis

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

origin of flexor pollicis longus

anterior surface of shaft of radius

insertion of flexor pollicis longus

distal phalanx of thumb

innervation of flexor pollicis longus

anterior interosseus branch of median nerve

action of flexor pollicis longus

flexes distal phalanx of thumb

origin of flexor digitorum profundus

anteromedial surface of shaft of ulna

insertion of flexor digitorum profundus

distal phalanges of medial 4 fingers

innervation of flexor digitorum profundus

• medial half: ulnar nerve

• lateral half: median nerve

action of flexor digitorum profundus

• flexes distal phalanx of fingers

• then assists in flexion of middle and proximal phalanges and wrist

origin of pronator quadratus

anterior surface of shaft of ulna

insertion of pronator quadratus

anterior surface of shaft of radius

innervation of pronator quadratus

anterior interosseus branch of median nerve

action of pronator quadratus

pronates forearm