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Year :2014
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Month :
November-December
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Volume :
3
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Issue :
4
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Page :
4 - 6
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Variations in the Musculocutaneous and Median Nerves in a Single Cadaver
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Correspondence Address :
Dinendra Kumar Saha, Sudeshna Majumdar, Saktipada Pradhan, Amitava Sarkar, Chiranjib Bapuli, Dr. Sudeshna Majumdar,
14, Metal Box Housing Estate, Bansdroni,
Kolkata-700070, West Bengal, India.
Phone : +919433007363
E-mail: sudeshnamajumdar.2007@rediffmail.com
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Introduction: Anomalies of the brachial plexus are of interest to academicians and clinicians. The Musculocutaneous Nerve (MCN) and the Median Nerve - the two branches of the brachial lexus may have several connections between them. The reported variations of musculocutaneousnerve in literature includes its total absence, communications with the median nerve at various levels or coracobrachialis muscle not pierced by it. While doing the routine dissection for MBBS students, in the Department of Anatomy, NRS Medical College, Kolkata, in April, 2014, few variations were found in the musculocutaneous and median nerves of the right arm of a seventy-five year old male cadaver. The right musculocutaneous nerve separated from the lateral root of the median nerve at the junction of upper one-fourth and lower three-fourth of arm and did not pierce the coracobrachialis muscle, but the latter had triple nerve supply. The musculocutaneous nerve gave three branches to the coracobrachialis muscle at different levels of the right arm. These anatomical variations have several clinical and surgical implications. This case report may enhance our knowledge in gross anatomy and clinical anatomy.
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