Summary
| Location: | On the back of the hand, extending the thumb. |
Information
| Group: | Elbow and Radioulnar, Wrist and Hand |
| Subgroup: | Extensor Pollicis |
| Side(s) of body: | Back |
| Function/Action: | Thumb Extensor |
Details
| Joint: | Carpometacarpal |
| Bone: | Radius, Metacarpals, Carpals |
| Origin: | Posterior surface of radius and interosseous membrane. |
| Insertion: | Base of proximal phalanx of the thumb. |