Unveiling the Uncommon: Bilateral Absence of Musculocutaneous Nerve in Cadaveric Examination

The brachial plexus is a network of nerves crucial to the innervation of the upper limb. The anatomy of the brachial plexus has been thought to be consistent across persons and is studied as such. Instances of deviations of this plexus pose significant challenges in both clinical diagnosis and surgical interventions. The musculocutaneous nerve, originating from the lateral cord of the brachial plexus, allows for movement of key muscles of the arm and cutaneous sensation to the forearm. Our present case reveals a unique bilateral absence of the musculocutaneous nerve. We aim to elucidate the anatomical, clinical, and surgical implications of a rare bilateral absence and compare our findings to similar reports.