Last reviewed dd mmm yyyy. Last edited dd mmm yyyy
Extensor carpi radialis brevis originates from the common extensor origin on the anterior aspect of the lateral epicondyle of the humerus. It inserts into dorsal base of the third metacarpal having traversed the extensor retinaculum.
The action of extensor carpi radialis brevis is to extend and radially-deviate the wrist.
It is supplied by the radial nerve via the posterior interosseous nerve, a branch of the radial nerve (C7,C8).
Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page