
The musculocutaneous nerve is a nerve of anterior compartment of arm and also cutaneous nerve on lateral side of anterior compartment of the forearm. Root value of this nerve is C5-C7. The variations in origin, course and distribution is not uncommon. The knowledge of variable origin and course is important for surgeons, traumatologist and orthopedicians. Operative treatment in arm should be done with keeping in mind such variations which will prevent the chances of iatrogenic injuries to the musculocutaneous nerve.