A rare bilateral absence of the musculocutaneous nerve associated with muscular and vascular variations: embryological considerations and clinical implications

Key Points

• Bilateral absence of the musculocutaneous nerve can lead to significant muscular and vascular variations in patients, impacting mobility and sensation.
• This case highlights crucial anatomical insights, where unique variations were observed in muscular structures related to the upper limb.
• Embryological analysis suggests that variations can emerge during development, influencing the anatomy and nerve supply of the upper extremities.
• Understanding these variations may aid in enhancing surgical approaches and clinical practices for arm-related interventions.