Anatomy - Abductor pollicis longus muscle
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Abductor pollicis longus - Action
Abduction of the thumb at the carpometacarpal joint, Abduction of the wrist, Extension of the thumb at the carpometacarpal joint, Weak supination of the forearm from a pronated position, Weak flexion of the wrist joint
Abductor pollicis longus - Insertion
Base of the first metacarpal (dorsal lateral surface)
Abductor pollicis longus - Origin
Posterior aspect of the radius and midshaft of the ulna
Abductor pollicis longus - Innervation
Radial nerve (C6, C7)
