A unilateral variant of musculocutaneous nerve-case report

The fracture of distal third of arm is common in the surgical procedure. The Musculocutaneous (MCN) nerve which supply the arm is very important for various surgical procedures,and which shows the frequent variation.But variation in the origin,course, and connection of MCN are not uncommon, and such variations have their own surgical importance. So that the purpose of present case report is identify the variation of MCN. The Routine cadaveric dissection method has been used for present case report. And during the routine dissection we have been observed unilateral variation of MCN on the right side, which pierces the corachobrachialis muscle and after shorts course MCN fibre communicate with median nerve. The structure of left limb was found to be normal in our case report. So the knowledge of thevariations of MCN in the distal third of the arm with median nerve is important in the anterior approach for the fracture of the humerus in various Limb surgeries.