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International Journal of Anatomical Variations

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M. Elena Stark1, Maria M. Dell2 and Jonathan J.Wisco1*
 
1 David Geffen School of Medicine at UCLA, Department of Pathology and Laboratory Medicine, Division of Integrative Anatomy, Los Angeles, California, USA
2 Santa Monica College, Department of Life Sciences, Santa Monica, California, USA
 
*Correspondence: Jonathan J.Wisco, Ph.D, David Geffen School of Medicine at UCLA, Department of Pathology and Laboratory Medicine, Division of Integrative Anatomy, 10833 Le Conte Ave., Room 52-060 CHS, Los Angeles, CA 90095-1732, USA, Tel: +1 310 825-7880, Email: [email protected]

Received: 16-Oct-2009 Accepted Date: Feb 26, 2010; Published: 28-Feb-2010

Citation: © IJAV. 2010; 3: 36–38.

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 [email protected]

Abstract

During routine anatomical dissection of the anterior compartment of the forearm region, a tendinous-musculo-tendinous muscle was found on the right forearm originating from the medial aspect of the radial shaft and inserting into the palmar aponeurosis. The muscle coursed deep to pronator teres muscle, parallel and lateral to the flexor digitorum superficialis muscle and deep to the tendon of the flexor carpi radialis. Distally, the muscle tendon coursed under the flexor retinaculum and it was invested with the median nerve by a common fascial sheath. The muscle was found in the presence of an intact palmaris longus muscle. Because of its attachments and course, the muscle was classified as a palmaris profundus muscle. Several subtypes of palmaris profundus muscles have been reported. To our knowledge this is the first case of a palmaris profundus with a tendon originating from the medial aspect of the radial diaphysis, a muscular portion and a distal tendon inserting in the palmar aponeurosis. Anatomical variations of muscles in the flexor compartment of the forearm may have functional, diagnostic, and surgical implications.

 
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Citations : 2140

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