Extensor Pollicis Longus Muscle
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Extensor Pollicis Longus Muscle

Extensor Pollicis Longus Muscle Anatomy The extensor pollicis longus (EPL) is a thin muscle of the forearm that belongs to the posterior muscle group, lying in the second or deep layer. Origin : It originates from the posterior surface of middle-third of ulna and interosseous membrane. Insertion : It inserts on the posterior aspect of…