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. 2007 Sep;2(3):120-2.
doi: 10.1007/s11552-007-9033-7. Epub 2007 Apr 10.

The concomitant presence of two anomalous muscles in the forearm

Tunç Cevat Ogun  1 , Nazim Karalezli, Cemile Oztin Ogun
Affiliations

The concomitant presence of two anomalous muscles in the forearm

Tunç Cevat Ogun et al. Hand (N Y). 2007 Sep.

Abstract

This article describes the concomitant presence of two anomalous forearm muscles in a 20-year-old man, discovered accidentally during an operation for a forearm injury. The first one was similar to a reverse palmaris longus muscle except for its direction to the Guyon's canal. The second one originated from the radial antebrachial fascia, superficial to all other forearm muscles in the lower half of the forearm, then diverged medially and extended into the Guyon's canal and was innervated by the ulnar nerve. The patient had no symptoms related to overcrowding of the Guyon's canal before the injury. A hand surgeon should be well informed about the anatomic variations of the hand to be comfortable during surgical practice.

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Figures

Figure 1
Figure 1
View of motor branch of ulnar nerve (m.b.ulnar n.), anomalous muscle, reverse palmaris longus muscle (p.l.m.) upon exploration. (asterisk) anomalous muscle entering Guyon’s canal.
Figure 2
Figure 2
View of anomalous muscle (m) originating from forearm fascia (f.f.) and reverse palmaris longus muscle (p.l.m.) upon exploration. (asterisk) anomalous muscle entering Guyon’s canal.
See this image and copyright information in PMC

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