Variation of Musculocutaneous Nervi Branching to Median Nerve and not Piercing Corocobrachialis Muscle; Case Report

Authors : Yusuf Seçgin, Halil Şaban Erkartal, Nesibe Yılmaz

Pages : 415-417

Doi:10.35440/hutfd.1639234

View : 32 | Download : 45

Publication Date : 2025-06-27

Article Type : Other Papers

Abstract :The fifth and sixth (and sometimes the fourth) cervical spinal nerves merge to form the superior trunk, and the superior trunk and the anterior part of the median nerve merge to form the fasciculus lateralis. Fasciculus lateralis is divided into two branches as lateral cord and musculocutaneous nerve. The mus-culocutaneous nerve pierces the corocobrachialis muscle muscle and then travels between the brachia-lis muscle and the biceps brachii musculus. Variations in anatomical structures are common. However, nerve variations occur more rarely in these structures. These variations are anatomically and clinically important. This case report was detected during routine dissection of a male cadaver in the Depart-ment of Anatomy, Karabuk University Faculty of Medicine. For dissection, the fossa axillaris, arm and forearm of both upper extremities were dissected. During dissection, it was found that the musculocu-taneous nerve in the left upper extremity continued without piercing the corocobrachialis muscle and gave a connecting branch to the median nerve. There are limited case studies on this nerve variation and studies show that this variational condition is important for surgical operations in this region. The-refore, this study is important for both surgical and clinical sciences.
Keywords : Nervus musculocutaneus, Musculus corocobrachialis, Nervus medianus, Varyasyon

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