Summary Abductor Pollicis Longus Origin Posterior surfaces of ulna, radius and interosseous membrane Insertion Base of 1st metacarpal Action Abducts thumb and extends it at carpometacarpal joint Innervation Posterior interosseous nerve (C7, C8) Arterial Supply Posterior interosseous artery
All Videos (0) Podcasts (1) Anatomy⎪Abductor Pollicis Longus Anatomy - Abductor Pollicis Longus Listen Now 2:58 min 2/4/2021 72 plays 0.0 (0)