Summary Extensor Digitorum Communis Origin Lateral epicondyle of humerus Insertion Extensor expansions of medial four digits Action Extends medial four digits at metacarpophalangeal joints; Extends hand at wrist joint Innervation Posterior interosseous nerve (C7, C8) Arterial Supply Interosseous recurrent and posterior interosseous arteries
Extensor Digitorum Communis summary OBC What is the origin? Origin Lateral epicondyle of humerus Show Bullets