Muscle Atlas

Anconeus

Origin: Lateral epicondyle of humerus
Insertion: Lateral surface of olecranon and superior part of posterior surface of ulna
Action: Assists triceps in extending forearm; stabilizes elbow joint; abducts ulna during pronation
Innervation: Radial nerve (C7, C8 and T1)
Arterial Supply: Middle collateral branch of deep brachial artery; Recurrent interosseous artery


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