Case Report
Volume 4 Issue 1 - 2021
Unique Anomalous Muscle in the Extensor Compartment of Forearm
Alka Bhingardeo*
Assistant Professor, Department of Anatomy, All India Institute of Medical Sciences, Bibinagar, Telangana, India
*Corresponding Author: Alka Bhingardeo, Assistant Professor, Department of Anatomy, All India Institute of Medical Sciences, Bibinagar, Telangana, India.
Received: November 03, 2020; Published: December 30, 20200


Extensor compartment of the forearm has superficial and deep group of muscles. All the muscles of this compartment arise from the lateral epicondyle and insert either on metacarpals or phalanges. During routine cadaveric dissection, we found an anomalous muscle with its tendon in the center of dorsum of palm. When traced, it was originating from the carpal bones and inserting at the dorsum of the base of proximal phalanx of middle finger. It was supplied by the posterior interosseous nerve. The numerical variations in the tendinous slips of some muscles of extensor compartment is not uncommon. Anomalous muscles in extensor compartment like Extensor digitorum brevis manus, extensor indices proprius and extensor medii proprius are reported in the literature. But this variant muscle in our case is not having any similarity with any of those variations reported in literature. It can be called as Variant Extensor digitorum manus.The knowledge of such rare variant muscle is important for surgeons for tendon transfer, tenosynovectomies, grafting and tendon repair surgeries to prevent inadvertent injuries.

Keywords: Anomalous Muscle; Extensor Digitorum Brevis Manus; Tendon Grafting


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Citation: Alka Bhingardeo. “Unique Anomalous Muscle in the Extensor Compartment of Forearm”. EC Clinical and Experimental Anatomy 4.1 (2021): 01-04.

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