Bilateral accessory flexor muscle of the forearm giving rise to a variant head of the first lumbrical

Received: 18-Dec-2013 Accepted Date: Mar 12, 2014; Published: 05-Jan-2015

This open-access article is distributed under the terms of the Creative Commons Attribution Non-Commercial License (CC BY-NC) (http://creativecommons.org/licenses/by-nc/4.0/), which permits reuse, distribution and reproduction of the article, provided that the original work is properly cited and the reuse is restricted to noncommercial purposes. For commercial reuse, contact reprints@pulsus.com

Abstract

We describe a bilateral accessory deep flexor in the forearm that originated from the lateral side of the forearm. The relatively large tendon bifurcated distally to form two branches, one of which was associated with a variant head of the first lumbrical muscle. The presence of an accessory tendon and a variant muscle within the carpal tunnel may contribute to median nerve compression and development of carpal tunnel syndrome in some patients.