Multiple Variations of Extensor Muscles of Forearm in Relation to the Radial Nerve: a Case Report and Review

During routine dissection in the Department of Anatomy, multiple variations of forearm muscles in relation to the radial nerve and its branches were observed on the right side of a 34 year old male cadaver. Brachioradialis close to its origin was receiving muscle fibers from the brachialis and the r...

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Autores principales:	Prakash, Rai,Rajalakshmi, Ranade,Anu Vinod, Prabhu,Latha V, Pai,Mangala M, Gajendra,Singh
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2008
Materias:	Anatomical variations Development Extensor carpi radialis longus and brevis muscles Forearm Radial nerve
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022008000200034
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spelling	oai:scielo:S0717-950220080002000342008-11-25Multiple Variations of Extensor Muscles of Forearm in Relation to the Radial Nerve: a Case Report and ReviewPrakash,Rai,RajalakshmiRanade,Anu VinodPrabhu,Latha VPai,Mangala MGajendra,Singh Anatomical variations Development Extensor carpi radialis longus and brevis muscles Forearm Radial nerve During routine dissection in the Department of Anatomy, multiple variations of forearm muscles in relation to the radial nerve and its branches were observed on the right side of a 34 year old male cadaver. Brachioradialis close to its origin was receiving muscle fibers from the brachialis and the radial nerve was passing in between them. Extensor carpi radialis brevis was absent and the extensor carpi radialis longus was giving two tendons in the second compartment of extensor retinaculum before its insertion while passing deep to the abductor pollicis longus. Absence of extensor carpi radialis brevis can be explained with the arrangement in lower mammals, where the two extensores carpi radiales are represented by one muscle. Ontogeny repeats phylogeny and anatomical variations have developmental basis. Henee, the pattern of muscular arrangement in this case can be said to be less evolved than the usual arrangement. The course of radial nerve between the two heads of brachioradialis makes it highly vulnerable to compression and injury, which may manifest as wrist drop (radial nerve palsy) or radial tunnel syndrome (compression of posterior interosseous nerve).info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.26 n.2 20082008-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022008000200034en10.4067/S0717-95022008000200034
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Anatomical variations Development Extensor carpi radialis longus and brevis muscles Forearm Radial nerve
spellingShingle	Anatomical variations Development Extensor carpi radialis longus and brevis muscles Forearm Radial nerve Prakash, Rai,Rajalakshmi Ranade,Anu Vinod Prabhu,Latha V Pai,Mangala M Gajendra,Singh Multiple Variations of Extensor Muscles of Forearm in Relation to the Radial Nerve: a Case Report and Review
description	During routine dissection in the Department of Anatomy, multiple variations of forearm muscles in relation to the radial nerve and its branches were observed on the right side of a 34 year old male cadaver. Brachioradialis close to its origin was receiving muscle fibers from the brachialis and the radial nerve was passing in between them. Extensor carpi radialis brevis was absent and the extensor carpi radialis longus was giving two tendons in the second compartment of extensor retinaculum before its insertion while passing deep to the abductor pollicis longus. Absence of extensor carpi radialis brevis can be explained with the arrangement in lower mammals, where the two extensores carpi radiales are represented by one muscle. Ontogeny repeats phylogeny and anatomical variations have developmental basis. Henee, the pattern of muscular arrangement in this case can be said to be less evolved than the usual arrangement. The course of radial nerve between the two heads of brachioradialis makes it highly vulnerable to compression and injury, which may manifest as wrist drop (radial nerve palsy) or radial tunnel syndrome (compression of posterior interosseous nerve).
author	Prakash, Rai,Rajalakshmi Ranade,Anu Vinod Prabhu,Latha V Pai,Mangala M Gajendra,Singh
author_facet	Prakash, Rai,Rajalakshmi Ranade,Anu Vinod Prabhu,Latha V Pai,Mangala M Gajendra,Singh
author_sort	Prakash,
title	Multiple Variations of Extensor Muscles of Forearm in Relation to the Radial Nerve: a Case Report and Review
title_short	Multiple Variations of Extensor Muscles of Forearm in Relation to the Radial Nerve: a Case Report and Review
title_full	Multiple Variations of Extensor Muscles of Forearm in Relation to the Radial Nerve: a Case Report and Review
title_fullStr	Multiple Variations of Extensor Muscles of Forearm in Relation to the Radial Nerve: a Case Report and Review
title_full_unstemmed	Multiple Variations of Extensor Muscles of Forearm in Relation to the Radial Nerve: a Case Report and Review
title_sort	multiple variations of extensor muscles of forearm in relation to the radial nerve: a case report and review
publisher	Sociedad Chilena de Anatomía
publishDate	2008
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022008000200034
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Multiple Variations of Extensor Muscles of Forearm in Relation to the Radial Nerve: a Case Report and Review

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