Incidence of Sternalis Muscle in the Caldas Population (Colombia): Anatomical Variations

SUMMARY: The musculus sternalis is an anatomical variant that occurs in 3-8 % of the world population and its incidence is higher in women. It can be found unilaterally or bilaterally and is located in the anterior wall of the thorax, where its fibers run parallel to the sternum and superficial to t...

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Autores principales:	Duque-Parra,Jorge Eduardo, Barco-Ríos,John, Vélez-García,Juan Fernando
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2019
Materias:	Miology Musculus esternalis Pectoralis major muscle Anatomical variation.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022019000401342
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spelling	oai:scielo:S0717-950220190004013422019-09-11Incidence of Sternalis Muscle in the Caldas Population (Colombia): Anatomical VariationsDuque-Parra,Jorge EduardoBarco-Ríos,JohnVélez-García,Juan Fernando Miology Musculus esternalis Pectoralis major muscle Anatomical variation. SUMMARY: The musculus sternalis is an anatomical variant that occurs in 3-8 % of the world population and its incidence is higher in women. It can be found unilaterally or bilaterally and is located in the anterior wall of the thorax, where its fibers run parallel to the sternum and superficial to the medial part of the pectoralis major muscle. The main objective of this study was to quantify the incidence of musculus sternalis in the population of Caldas (Colombia) and, therefore, 68 cadavers of adult individuals were used during a period of twenty years to determine the incidence of this muscle and describe its anatomical characteristics. Two cadavers had this muscle, which was equivalent to 2.94 % of the sample, where one was located unilaterally and in other bilaterally. In the case of unilateral presence, the muscle presented an oblique direction thatdoes not coincide with any subtype of the classification given for these muscles. In bilateral presentation, both muscles were continuous at their upper ends with the respective sternocleidomastoid muscle. In addition, the right musculus sternalis had a digastric shape, which also does not coincide with any subtype of the classification.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.37 n.4 20192019-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022019000401342en10.4067/S0717-95022019000401342
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Miology Musculus esternalis Pectoralis major muscle Anatomical variation.
spellingShingle	Miology Musculus esternalis Pectoralis major muscle Anatomical variation. Duque-Parra,Jorge Eduardo Barco-Ríos,John Vélez-García,Juan Fernando Incidence of Sternalis Muscle in the Caldas Population (Colombia): Anatomical Variations
description	SUMMARY: The musculus sternalis is an anatomical variant that occurs in 3-8 % of the world population and its incidence is higher in women. It can be found unilaterally or bilaterally and is located in the anterior wall of the thorax, where its fibers run parallel to the sternum and superficial to the medial part of the pectoralis major muscle. The main objective of this study was to quantify the incidence of musculus sternalis in the population of Caldas (Colombia) and, therefore, 68 cadavers of adult individuals were used during a period of twenty years to determine the incidence of this muscle and describe its anatomical characteristics. Two cadavers had this muscle, which was equivalent to 2.94 % of the sample, where one was located unilaterally and in other bilaterally. In the case of unilateral presence, the muscle presented an oblique direction thatdoes not coincide with any subtype of the classification given for these muscles. In bilateral presentation, both muscles were continuous at their upper ends with the respective sternocleidomastoid muscle. In addition, the right musculus sternalis had a digastric shape, which also does not coincide with any subtype of the classification.
author	Duque-Parra,Jorge Eduardo Barco-Ríos,John Vélez-García,Juan Fernando
author_facet	Duque-Parra,Jorge Eduardo Barco-Ríos,John Vélez-García,Juan Fernando
author_sort	Duque-Parra,Jorge Eduardo
title	Incidence of Sternalis Muscle in the Caldas Population (Colombia): Anatomical Variations
title_short	Incidence of Sternalis Muscle in the Caldas Population (Colombia): Anatomical Variations
title_full	Incidence of Sternalis Muscle in the Caldas Population (Colombia): Anatomical Variations
title_fullStr	Incidence of Sternalis Muscle in the Caldas Population (Colombia): Anatomical Variations
title_full_unstemmed	Incidence of Sternalis Muscle in the Caldas Population (Colombia): Anatomical Variations
title_sort	incidence of sternalis muscle in the caldas population (colombia): anatomical variations
publisher	Sociedad Chilena de Anatomía
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022019000401342
work_keys_str_mv	AT duqueparrajorgeeduardo incidenceofsternalismuscleinthecaldaspopulationcolombiaanatomicalvariations AT barcoriosjohn incidenceofsternalismuscleinthecaldaspopulationcolombiaanatomicalvariations AT velezgarciajuanfernando incidenceofsternalismuscleinthecaldaspopulationcolombiaanatomicalvariations
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Incidence of Sternalis Muscle in the Caldas Population (Colombia): Anatomical Variations

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