Origin: Lateral epicondyle of the humerus, the lateral collateral ligament of the elbow, the annular ligament, the supinator crest of the Radius and fossa of the Ulna

Insertion: Lateral and anterior surface of the proximal third of the Radius

Function: Supinates the Forearm along with other muscles which supinate the forearm

Nerve: Posterior Interosseous Nerve

Artery: the Radial Recurrent artery and the Posterior Interosseous artery

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