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Unilateral accessory brachialis muscle and its functional significance: a case report of rare variation
Ariyanachi Kaliappan1, Rohini Motwani2, Mrudula Chandrupatla1
1Department of Anatomy, AIIMS Bibinagar, Hyderabad, 508126, India.
Abstract:
Variations of the brachialis muscle are uncommon in the literature. During regular cadaveric dissection, we observed the unilateral presence of an accessory muscle in the front of the right arm of a female cadaver, taking its origin from the medial aspect of the brachialis and the adjacent intermuscular septum. The muscle belly descended downwards, crossed the neurovascular bundle in the cubital fossa and merged with the fibres of the pronator teres. There is no doubt regarding its significance in the etiogenesis of numerous compression syndromes due to its close topographical relationship with the neurovascular bundle. In our report, we consider the potential developmental process and therapeutic implications of this variation, which can aid surgeons in their strategy and management.
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