The abductor pollicis longus is stretched with adduction and flexion of the thumb at the carpometacarpal joint, and radial deviation of the hand at the wrist joint.
- The abductor pollicis longus is involved with deQuervain’s Syndrome.
- The extensor pollicis brevis is one of four muscles in the deep distal posterior forearm.
The muscles of the deep distal posterior forearm are the:
- abductor pollicis longus
- extensor pollicis brevis
- extensor pollicis longus
- extensor indicis