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Review article
peer-reviewed

Extensor Digitorum Brevis Manus: A Comprehensive Review of this Variant Muscle of the Dorsal Hand



Abstract

The extensor digitorum brevis manus (EDBM) is a variant muscle located on the dorsum of the hand. This variant of the fourth compartment has often eluded preoperative diagnosis and led to unnecessary repeat visits to the operating room owing to its lack of notoriety. As a result, we aim to review the literature concerning the EDBM with respect to its embryology, comparative anatomy and variants, and clinical significance in an attempt to increase awareness and help in preoperative diagnosis and management. A total of 21 articles were reviewed. The results show that the EDBM often goes underdiagnosed and is frequently discovered incidentally in the operating room or in cadaveric dissections. There are multiple variations of the EDBM that, in certain instances, dictate the correct method of management. While there has been a reversal of opinions on which technique is the most popular at relieving symptoms caused by the EDBM, current arguments stand for retinacular release only when the EDBM serves as a sole extensor for one of the indices. In other instances where this is not the case, surgical excision of the EDBM proved to be the most effective at relieving symptoms.



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Review article
peer-reviewed

Extensor Digitorum Brevis Manus: A Comprehensive Review of this Variant Muscle of the Dorsal Hand


Author Information

Rafik Shereen Corresponding Author

Department of Anatomical Sciences, St. George's University School of Medicine, Grenada, West Indies

Marios Loukas

Department of Anatomical Sciences, St. George's University School of Medicine, Grenada, West Indies

R. Shane Tubbs

Neurosurgery, Seattle Science Foundation


Ethics Statement and Conflict of Interest Disclosures

Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work.


Review article
peer-reviewed

Extensor Digitorum Brevis Manus: A Comprehensive Review of this Variant Muscle of the Dorsal Hand


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Review article
peer-reviewed

Extensor Digitorum Brevis Manus: A Comprehensive Review of this Variant Muscle of the Dorsal Hand

Rafik Shereen">Rafik Shereen , Marios Loukas">Marios Loukas, R. Shane Tubbs">R. Shane Tubbs

  • Author Information
    Rafik Shereen Corresponding Author

    Department of Anatomical Sciences, St. George's University School of Medicine, Grenada, West Indies

    Marios Loukas

    Department of Anatomical Sciences, St. George's University School of Medicine, Grenada, West Indies

    R. Shane Tubbs

    Neurosurgery, Seattle Science Foundation


    Ethics Statement and Conflict of Interest Disclosures

    Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work.

    Acknowledgements


    Article Information

    Published: August 15, 2017

    DOI

    10.7759/cureus.1568

    Cite this article as:

    Shereen R, Loukas M, Tubbs R (August 15, 2017) Extensor Digitorum Brevis Manus: A Comprehensive Review of this Variant Muscle of the Dorsal Hand. Cureus 9(8): e1568. doi:10.7759/cureus.1568

    Publication history

    Received by Cureus: July 25, 2017
    Peer review began: August 02, 2017
    Peer review concluded: August 07, 2017
    Published: August 15, 2017

    Copyright

    © Copyright 2017
    Shereen et al. This is an open access article distributed under the terms of the Creative Commons Attribution License CC-BY 3.0., which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

    License

    This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

The extensor digitorum brevis manus (EDBM) is a variant muscle located on the dorsum of the hand. This variant of the fourth compartment has often eluded preoperative diagnosis and led to unnecessary repeat visits to the operating room owing to its lack of notoriety. As a result, we aim to review the literature concerning the EDBM with respect to its embryology, comparative anatomy and variants, and clinical significance in an attempt to increase awareness and help in preoperative diagnosis and management. A total of 21 articles were reviewed. The results show that the EDBM often goes underdiagnosed and is frequently discovered incidentally in the operating room or in cadaveric dissections. There are multiple variations of the EDBM that, in certain instances, dictate the correct method of management. While there has been a reversal of opinions on which technique is the most popular at relieving symptoms caused by the EDBM, current arguments stand for retinacular release only when the EDBM serves as a sole extensor for one of the indices. In other instances where this is not the case, surgical excision of the EDBM proved to be the most effective at relieving symptoms.



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Rafik Shereen, M.D.

Department of Anatomical Sciences, St. George's University School of Medicine, Grenada, West Indies

For correspondence:
rafikshereen@gmail.com

Marios Loukas

Department of Anatomical Sciences, St. George's University School of Medicine, Grenada, West Indies

R. Shane Tubbs, Ph.D., Professor

Neurosurgery, Seattle Science Foundation

Rafik Shereen, M.D.

Department of Anatomical Sciences, St. George's University School of Medicine, Grenada, West Indies

For correspondence:
rafikshereen@gmail.com

Marios Loukas

Department of Anatomical Sciences, St. George's University School of Medicine, Grenada, West Indies

R. Shane Tubbs, Ph.D., Professor

Neurosurgery, Seattle Science Foundation