Origin

1- lateral dorsal ulna below the insertion of the Anconæus

2- the interosseous membrane

3- middle third dorsal surface of radius

Insertion

anterior aspect of the base of the first metacarpal

Action(s)

abducts and extends the thumb at CMC joint / wrist flexion / wrist abductor

Nerve Supply

PIN

Arterial Supply

Posterior Interosseous Artery

Physical Exam

Enter physical examination maneuvers for muscle

Clinical Importance

Enter clinical importance of muscle

Disease States

Enter links to pages where muscle involved

Discussion

Discussion on muscle

Figures

Click thumbnail for larger image

Credits:

From Wikipedia:
Abductor pollicis longus

Attachments: