Median Nerve as a Nerve of Anterior Compartment of Arm with its Variant Formation.

Absence ofMusculocutaneous nerve and unusual formation and innervation ofMedian nerve were noted in left upper limb during anatomical dissection of 60 yr old female cadaver.Median nerve normally does not give any branch in arm but in this case it innervates all the muscles of anterior compartment of arm in place of Musculocutaneous nerve. Here we discussed its embryology. It is important to be aware of such possible anatomical variations in routine clinical practice.