Summary
| Location: | In the forearm, on the thumb side, abducting the thumb. |
Information
| Group: | Elbow and Radioulnar, Wrist and Hand |
| Side(s) of body: | Back |
| Function/Action: | Thumb Abductor |
Details
| Joint: | Carpometacarpal |
| Bone: | Radius, Metacarpals, Carpals |
| Origin: | Posterior surface of ulna and radius. |
| Insertion: | Base of first metacarpal bone. |