Abstract During routine dissection of the upper limb - MBBS teaching session, we come across an unusual innervation pattern of the coracobrachialis muscle by the median nerve (MN) in the arm. Typically, the coracobrachialis is innervated by the musculocutaneous nerve. However, variations in brachial plexus branching patterns may lead to atypical nerve supplies. This case report documents the anatomical variation of the MN, discusses its embryological basis, and reviews the latest literature on MN anomalies. Such variations are clinically significant for surgeons, anesthesiologists, and neurologists to prevent iatrogenic injuries and misinterpretations of nerve compression syndromes.
Parmar et al. (Wed,) studied this question.