Anatomical and Clinical Considerations of the Pectoralis Tertius Muscle in Man

The anatomical variation of the major pectoral muscles is infrequent, namely the agenesis of the pectoralis major muscle due to the morpho-functional alterations it causes. On the other hand, he presence of -supernumerary - pectoral muscles is not common and its physiological, clinical or surgical i...

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Autores principales:	del Sol,Mariano, Vásquez,Bélgica
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2009
Materias:	Pectoral tertius muscle human anatomy muscular variation
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000300014
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spelling	oai:scielo:S0717-950220090003000142010-04-05Anatomical and Clinical Considerations of the Pectoralis Tertius Muscle in Mandel Sol,MarianoVásquez,Bélgica Pectoral tertius muscle human anatomy muscular variation The anatomical variation of the major pectoral muscles is infrequent, namely the agenesis of the pectoralis major muscle due to the morpho-functional alterations it causes. On the other hand, he presence of -supernumerary - pectoral muscles is not common and its physiological, clinical or surgical importance will depend on the stage of its development. The important aspect is that these muscles, while crossing the anterior wall of the axila and inserting in the humerus, may confuse or difficult surgical access to the content of the axillary fossa. Pectoralis tertius muscles were found in two dissected cadavers at the Topographic Anatomy of the Faculty of Medicine of the Universidad de La Frontera, Chile. These muscles were bilateral and independent of the pectoralis major muscle. They originated in the external face of the sixth rib and adjacent regions, and inserted in the coracoid process, the crest of the greater tubercle of the humerus, or next to the insertion of the pectoralis major muscle, contributing to the formation of the anterior wall of the axila. The supernumerary muscles crossing the axillary region, whether in an arched form or elongated as the pectoralis tertius muscles, may confuse the surgeon at the entrance of the axila. In view of the above, it is always necessary to consider the possible existence of this type of anatomical variation.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.27 n.3 20092009-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000300014en10.4067/S0717-95022009000300014
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Pectoral tertius muscle human anatomy muscular variation
spellingShingle	Pectoral tertius muscle human anatomy muscular variation del Sol,Mariano Vásquez,Bélgica Anatomical and Clinical Considerations of the Pectoralis Tertius Muscle in Man
description	The anatomical variation of the major pectoral muscles is infrequent, namely the agenesis of the pectoralis major muscle due to the morpho-functional alterations it causes. On the other hand, he presence of -supernumerary - pectoral muscles is not common and its physiological, clinical or surgical importance will depend on the stage of its development. The important aspect is that these muscles, while crossing the anterior wall of the axila and inserting in the humerus, may confuse or difficult surgical access to the content of the axillary fossa. Pectoralis tertius muscles were found in two dissected cadavers at the Topographic Anatomy of the Faculty of Medicine of the Universidad de La Frontera, Chile. These muscles were bilateral and independent of the pectoralis major muscle. They originated in the external face of the sixth rib and adjacent regions, and inserted in the coracoid process, the crest of the greater tubercle of the humerus, or next to the insertion of the pectoralis major muscle, contributing to the formation of the anterior wall of the axila. The supernumerary muscles crossing the axillary region, whether in an arched form or elongated as the pectoralis tertius muscles, may confuse the surgeon at the entrance of the axila. In view of the above, it is always necessary to consider the possible existence of this type of anatomical variation.
author	del Sol,Mariano Vásquez,Bélgica
author_facet	del Sol,Mariano Vásquez,Bélgica
author_sort	del Sol,Mariano
title	Anatomical and Clinical Considerations of the Pectoralis Tertius Muscle in Man
title_short	Anatomical and Clinical Considerations of the Pectoralis Tertius Muscle in Man
title_full	Anatomical and Clinical Considerations of the Pectoralis Tertius Muscle in Man
title_fullStr	Anatomical and Clinical Considerations of the Pectoralis Tertius Muscle in Man
title_full_unstemmed	Anatomical and Clinical Considerations of the Pectoralis Tertius Muscle in Man
title_sort	anatomical and clinical considerations of the pectoralis tertius muscle in man
publisher	Sociedad Chilena de Anatomía
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000300014
work_keys_str_mv	AT delsolmariano anatomicalandclinicalconsiderationsofthepectoralistertiusmuscleinman AT vasquezbelgica anatomicalandclinicalconsiderationsofthepectoralistertiusmuscleinman
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Anatomical and Clinical Considerations of the Pectoralis Tertius Muscle in Man

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