extensor pollicis brevis


Also found in: Acronyms, Wikipedia.

extensor pollicis brevis

a muscle that extends the metacarpophalangeal and carpometacarpal joints of the thumb.
References in periodicals archive ?
4) Other associated injuries included tearing of the dorsal metacarpophalangeal joint capsule, stretching of the adductor expansion, and rupture of the extensor pollicis brevis.
The origins of the extensor indicis, extensor pollicis longus, extensor pollicis brevis, abductor pollicis longus, flexor pollicis longus, and flexor digitorum profundus were digitized from 11 cadavers.
Additionally, the extensor pollicis brevis (EPB) is routinely transferred from the base of the proximal phalanx to the metacarpal base to reduce the hyperextension forces placed on the MP joint.

Full browser ?