Origin of Extensor Pollicis Longus
Posterior surface of middle 1/3 of ulna and interosseous membrane
Insertion of Extensor Pollicis Longus
Base of distal phalanx of thumb
Muscle Function of Extensor Pollicis Longus
Extends distal phalanx of thumb at carpometacarpal and interphalangeal joints
Artery Supply of Extensor Pollicis Longus
Posterior interosseous artery
Extensor Pollicis Longus and Brevis Video