Abductor Pollicis Longus Muscle
Abductor Pollicis Longus (APL) Muscle Anatomy The Abductor pollicis longus muscle lies immediately below the supinator and is sometimes united with it. It is found in the posterior compartment of the forearm. It is one of the five deep extensors in the forearm, along with the supinator, extensor pollicis brevis, extensor pollicis longus, and extensor…