Multiple “retrogressive” variations in upper limb

The muscular, neural and vascular variations of upper limb are not uncommon. Their importance become apparent with regard to surgical approaches for various clinical conditions and comparative anatomy involving the upper limb.
Even though individually presence of 3rd head of biceps brachii, absence of musculocutaneous nerve, innervations of the flexors of arm by median nerve, accessory belly Ganzter’s muscle in the forearm, median artery in the forearm and formation of superficial palmar arch by median artery are common occurrence.
The combination of all these events occurring in a single upper limb is a rare phenomenon.
During routine dissection class of 1st MBBS students at MMC & RI, Mysore, we observed the above mentioned unilateral variations in the left upper limb of a middle aged male cadaver.