Formation of median nerve from single root on left side and communicating branch from median nerve to musculocutaneous nerve on right side

We report here a rare variation of median nerve in an adult male cadaver observed during routine cadaveric dissection. A meticulous dissection was performed and the observations were noted. On left side, median nerve was formed from lateral cord. On right side, median nerve was formed by fusion of t...

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Veröffentlicht in:Morphologie 2012-08, Vol.96 (313), p.51-54
Hauptverfasser: Patil, S.T., Meshram, M.M., Kasote, A.P., Kamdi, N.Y.
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container_end_page 54
container_issue 313
container_start_page 51
container_title Morphologie
container_volume 96
creator Patil, S.T.
Meshram, M.M.
Kasote, A.P.
Kamdi, N.Y.
description We report here a rare variation of median nerve in an adult male cadaver observed during routine cadaveric dissection. A meticulous dissection was performed and the observations were noted. On left side, median nerve was formed from lateral cord. On right side, median nerve was formed by fusion of two slightly longer roots. The communicating branch from median nerve goes laterally to join musculocutaneous nerve. This communicating branch lies between biceps brachii and brachialis muscle and gives small branches to brachialis muscle. Knowledge of these variations is important to anatomists, radiologists, anaesthesiologists and surgeons, which may contribute to the explanation of diagnosis and surgical treatment, which can prevent any postoperative complications during surgery. The knowledge of this anatomical variation is important specially when performing plexus bloc or Latarjet's procedure. Nous rapportons le cas d’une variation anatomique rare touchant le nerf médian découverte fortuitement au décours de dissection. Sur le côté gauche, le nerf médian était formé uniquement à partir du faisceau latéral. Sur le côté droit, le nerf médian était formé par la fusion de deux racines plus longues. Du côté droit, un rameau communicant unissait le nerf médian au nerf musculocutané. Ce rameau communicant se plaçait entre le biceps brachial et le muscle brachial et donnait des petites branches au muscle brachial. La connaissance de ces variations est importante pour les anatomistes, les radiologues, anesthésistes et chirurgiens. Elle peut contribuer au diagnostic et au traitement chirurgical pour éviter toute complication postopératoire dans la région du bras pendant la chirurgie. Elle a un intérêt clinique, notamment lors de la réalisation de bloc plexique et chirurgical lors de réalisation de butée.
doi_str_mv 10.1016/j.morpho.2012.06.001
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Sur le côté gauche, le nerf médian était formé uniquement à partir du faisceau latéral. Sur le côté droit, le nerf médian était formé par la fusion de deux racines plus longues. Du côté droit, un rameau communicant unissait le nerf médian au nerf musculocutané. Ce rameau communicant se plaçait entre le biceps brachial et le muscle brachial et donnait des petites branches au muscle brachial. La connaissance de ces variations est importante pour les anatomistes, les radiologues, anesthésistes et chirurgiens. Elle peut contribuer au diagnostic et au traitement chirurgical pour éviter toute complication postopératoire dans la région du bras pendant la chirurgie. 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subjects Biological and medical sciences
Brachial Plexus - anatomy & histology
Cadaver
Communication
Fundamental and applied biological sciences. Psychology
Humans
Male
Median nerve
Median Nerve - anatomy & histology
Median Nerve - embryology
Middle Aged
Musculocutaneous nerve
Musculocutaneous Nerve - anatomy & histology
Musculocutaneous Nerve - embryology
Nerf musculocutané
Nerf médian
Rameau communicant
Variations
Vertebrates: anatomy and physiology, studies on body, several organs or systems
title Formation of median nerve from single root on left side and communicating branch from median nerve to musculocutaneous nerve on right side
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