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