Function: Given its ambiguous position with respect to the axis of rotation of the carpal joint, it can act as an extensor or as a flexor of the carpus. Furthermore, when laterally disposed, it also acts as an abductor of the autopod. Innervation: Radial nerve.  Alpha Force Testo

This muscle, whose belly has a triangular shape and is covered by the digital extensors, originates in the interosseous membrane of the forearm and in the lateral faces of the forearm (Figure 7d, 7f, 8a, 8b, 8c, 8d).

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