opponens pollicis


Also found in: Acronyms.

opponens pollicis

the largest of the three thenar muscles. It rotates and flexes the first metacarpal on the trapezium, so bringing the pad of the thumb into a position facing the pads of the fingers.
References in periodicals archive ?
The median nerve also serves the abductor pollicis brevis, the opponens pollicis, and the superficial head of the flexor pollicis brevis; involves the muscles to the thumb (Li, Harkness, & Goitz, 2005); and is the most specific motor assessment for CTS.
Bilateral biceps, brachioradialis, and triceps muscle stretch reflexes were tested, as were bilateral muscle strength in the biceps, triceps, deltoids, and opponens pollicis.
There was 3+/5 motor strength of the bilateral APB and opponens pollicis, but otherwise there was normal (5/5) motor strength testing of bilateral shoulder, elbow, forearm, wrist, and hand motions, and there was no atrophy or clonus noted in BUE.