Double Gantzer's Muscles by Four Muscle Bellies and Its Clinical Significance: A Case Report

Si-Wook Lee; Jae-Ho Lee; Hyunsu Lee

doi:10.11637/kjpa.2017.30.2.67

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Lee, Lee, and Lee: Double Gantzer's Muscles by Four Muscle Bellies and Its Clinical Significance: A Case Report

Case Report

Korean J Phys Anthropol 2017;30(2):67-70.

Published online: 20 February 2017

DOI: https://doi.org/10.11637/kjpa.2017.30.2.67

Double Gantzer's Muscles by Four Muscle Bellies and Its Clinical Significance: A Case Report

Si-Wook Lee¹, Jae-Ho Lee², Hyunsu Lee^2,

¹Department of Orthopedic Surgery, School of Medicine, Keimyung University

²Department of Anatomy, School of Medicine, Keimyung University

Correspondence to: Hyunsu Lee (Department of Anatomy, School of Medicine, Keimyung University) E-mail: neuroana@dsmc.or.kr

The author(s) agree to abide by the good publication practice guideline for medical journals. The author(s) declare that there are no conflicts of interest.

Received 3 March 2017 Revised 16 March 2017 Accepted 22 March 2017

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The Gantzer's muscle (GM) is an additional muscle in the forearm as the accessory head of the flexor pollicis longus (FPL) and accessory head of the flexor digitorum profundus (FDP). We reported a rare case of double GM formed by four muscle bellies. From the dorsal part of flexor digitorum superficialis, small four bellies formed two muscles merging to FDP and FPL, as GMs. These accessory heads of FDP and FPL crossed the ulnar artery and the median nerve, respectively. These additional muscles in the forearm flexor compartment are rare and its clinical and embryological significances should be considered.

Keywords: Gantzer's muscle, F lexor digitorum profundus, F lexor pollicis longus, Variation

References

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Fig. 1.

Under flexor digitorum superficialis (FDS), four muscle bellies (∗) formed two Gantzer's muscles, as accessory heads of the flexor digitorum profundus (aFDP) and flexor pollcis longus (aFPL). FDP, flexor digitorum profundus; FPL, flexor pollcis longus; MN, median nerve; UA, ulnar artery; UN, ulnar nerve.

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