ABSTRACT
Background: The variable course of the nerves may be the cause of many neuralgic pains of the superior extremity.The knowledge of percentage of variations may help the surgeons in treating the cases of trauma & entrapmentneuropathies.Materials and Methods: The present study in 70 upper limbs of 35 human cadavers over a period 1year at thedepartment of Anatomy at Siddhartha medical college and surrounding medical colleges around Vijayawada.The detailed examination of the following nerves that is musculocutaneous, median, ulnar, radial and axillarynerves was done in the arm and following variations were observed.Results: Communication between musculocutaneous and median nerves in eleven limbs. Musculocutaneousnerve was absent in our limbs. Median nerve supplied muscles of front of arm where musculocutaneous nervewas absent in one limb. Musculocutaneous nerve did not pierce coracobrachialis muscle in seven limbs. TheCommunication between radial and ulnar nerve in one limb.Conclusion: Lesions of communicating nerve may give rise to pattern of weakness that may impose difficulty indiagnosis. So it is important to be aware of the variations that are observed and discussed in our study. Knowledgeof these variations is important for neurologists, orthopaedicians and traumatologists as these may give rise tovariable clinical picture depending upon the variations present.