Origin: Common extensor tendon of the lateral epicondyle the radial collateral ligament of the elbow and the deep forearm fascia
Insertion: Dorsal base of the Middle Metacarpal
Function: Extends and radially deviates the Wrist. Weak elbow flexor.
Nerve: Posterior Interosseous Nerve
Artery: Muscular Branches of Radial ArteryRadial Recurrent artery
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