Extensor Digitorum Brevis Manus

Myung Hoon Park; Nak Chul Kim; Tong Ju Lee

doi:10.4055/jkoa.2017.52.6.562

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This article has been corrected. See "Corrigendum: Extensor Digitorum Brevis Manus" in Volume 53 on page 374.

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Park, Kim, and Lee: Extensor Digitorum Brevis Manus

Case Report

Journal of the Korean Orthopaedic Association 2017; 52(6): 562-565.

Published online: 22 December 2017

DOI: https://doi.org/10.4055/jkoa.2017.52.6.562

Extensor Digitorum Brevis Manus

Myung Hoon Park, M.D., Nak Chul Kim, M.D., Tong Ju Lee, M.D.

Department of Orthopedic Surgery, Inha University Hospital, Incheon, Korea.

Correspondence to: Tong Ju Lee, M.D. Department of Orthopedic Surgery, Inha University Hospital, 27 Inhang-ro, Jung-gu, Incheon 22332, Korea. TEL: +82-32-890-3662, FAX: +82-32-890-3047, TJLee@inha.ac.kr

Received 25 October 2016 Revised 31 December 2016 Accepted 10 March 2017

The Korean Orthopaedic Association

(open-access):

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Extensor digitorum brevis manus (EDBM) is a rare variation of the extensor muscle of the dorsum of the hand, which is found incidentally during surgery or magnetic resonance imaging (MRI). EDBM arises from the wrist capsule inferior to the extensor retinaculum, which frequently goes into the ulna side of the basis of the proximal phalanx between the 2nd and 3rd fingers. The aim of this report is evaluate to investigate the symptomatic mass on the dorsum of the hand and wrist using an image study (MRI or ultrasonography) to confirm whether it is a tumor or EDBM. Surgical excision was chosen as a treatment.

Keywords: extensor digitorum brevis manus (EMDM)

Figures and Tables

Figure 1

Inflammatory change was observed in magnetic resonance imaging scanning (arrows). (A) T1 axial view. (B) T1 sagittal view.

Figure 2

Wrist joint ultrasonography at 2016 shows a muscle on the dorsum of the left wrist.

Figure 3

Magnetic resonance imaging scanning at 2016 (arrows) (A: T1 axial view, B: T1 sagittal view) shows hypertrophy of extensor digitorum brevis manus.

Figure 4

Excised extensor digitorum brevis manus was 6 cm.

Notes

This study was supported by research fund from Inha University, 2017.

^{CONFLICTS OF INTEREST} The authors have nothing to disclose.

References

1. Fakih RR, Thomas R, Mansour A. The extensor digitorum brevis manus. A case report. Bull Hosp Jt Dis. 1997; 56:115–116.

2. Reef TC, Brestin SG. The extensor digitorum brevis manus and its clinical significance. J Bone Joint Surg Am. 1975; 57:704–706.

3. Smith JS, Browne PA. Extensor digitorum brevis manus: a case report and review. Hand. 1979; 11:217–223.

4. Yammine K. The prevalence of extensor digitorum brevis manus and its variants in humans: a systematic review and meta-analysis. Surg Radiol Anat. 2015; 37:3–9.

5. Ogura T, Inoue H, Tanabe G. Anatomic and clinical studies of the extensor digitorum brevis manus. J Hand Surg Am. 1987; 12:100–107.

6. Khaledpour C, Schindelmeiser J. Simultaneous bilateral occurrence of a M. extensor digiti medii and a M. extensor digitorum brevis. Ann Anat. 1993; 175:567–568.

7. Gama C. Extensor digitorum brevis manus: a report on 38 cases and a review of the literature. J Hand Surg Am. 1983; 8:578–582.

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