Abductor Pollicis Longus
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abductor pollicis longus primary action
abduct and extend the carpometacarpal joint of the thumb
abductor pollicis longus secondary actions: wrist, forearm
abduct and extend the wrist, supinate the forearm from a pronated position
abductor pollicis longus origin
posterior aspect of the radius and midshaft of the ulna
abductor pollicis longus insertion
posterior base of the first metacarpal
abductor pollicis longus innervation
radial nerve c6,c7
