Anatomical Variations of the Anterior Belly of the Digastric Muscle

SUMMARY: A routine dissection of the digastric muscle reflected that it originated by two muscle bellies namely. the anterior and posterior belly which are connected by an intermediate tendon (IT). These bellies originated from the mastoid process of the temporal bone and the digastric fossa of the...

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Autores principales:	Guambe,Khayelihle, De-Gama,Brenda Z, Pillay,Pamela, Satyapal,Kapil S
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2019
Materias:	Digastric muscle Anterior belly Accessory belly Anatomical variation
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022019000401504
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spelling	oai:scielo:S0717-950220190004015042019-09-11Anatomical Variations of the Anterior Belly of the Digastric MuscleGuambe,KhayelihleDe-Gama,Brenda ZPillay,PamelaSatyapal,Kapil S Digastric muscle Anterior belly Accessory belly Anatomical variation SUMMARY: A routine dissection of the digastric muscle reflected that it originated by two muscle bellies namely. the anterior and posterior belly which are connected by an intermediate tendon (IT). These bellies originated from the mastoid process of the temporal bone and the digastric fossa of the mandible respectively. The digastric muscle serves as an important surgical landmark in surgical interventions involving the submental area however, accessory bellies may interfere with surgical intervention in this area. Therefore, this study aimed to document the occurrence of the anatomical variations in the anterior belly of the digastric muscle (ABDM) in a selected number of cadaveric samples. Ten bilateral adult cadaveric head and neck specimens (n = 20) were macro-dissected in order to document the morphology of the digastric muscle. The accessory bellies in the ABDM was observed in 60 % of the specimens. Unilateral and bilateral variations were observed in 20 % and 30 % of the specimens, respectively. These accessory bellies originated in the digastric fossa, ABDM, IT and hyoid bone, and inserted into the mylohyoid raphe, mylohyoid muscle and hyoid bone. In addition, an anomalous main ABDM was observed in 10 % of the specimens inserting through a transverse tendon into the hyoid bone. Variations in the digastric muscle are common especially the accessory bellies, therefore, a comprehensive understanding of these anatomical variations could be of clinical importance to the surgeons during head and neck radiological diagnosis and surgical interventions.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=S0717-95022019000401504en10.4067/S0717-95022019000401504
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Digastric muscle Anterior belly Accessory belly Anatomical variation
spellingShingle	Digastric muscle Anterior belly Accessory belly Anatomical variation Guambe,Khayelihle De-Gama,Brenda Z Pillay,Pamela Satyapal,Kapil S Anatomical Variations of the Anterior Belly of the Digastric Muscle
description	SUMMARY: A routine dissection of the digastric muscle reflected that it originated by two muscle bellies namely. the anterior and posterior belly which are connected by an intermediate tendon (IT). These bellies originated from the mastoid process of the temporal bone and the digastric fossa of the mandible respectively. The digastric muscle serves as an important surgical landmark in surgical interventions involving the submental area however, accessory bellies may interfere with surgical intervention in this area. Therefore, this study aimed to document the occurrence of the anatomical variations in the anterior belly of the digastric muscle (ABDM) in a selected number of cadaveric samples. Ten bilateral adult cadaveric head and neck specimens (n = 20) were macro-dissected in order to document the morphology of the digastric muscle. The accessory bellies in the ABDM was observed in 60 % of the specimens. Unilateral and bilateral variations were observed in 20 % and 30 % of the specimens, respectively. These accessory bellies originated in the digastric fossa, ABDM, IT and hyoid bone, and inserted into the mylohyoid raphe, mylohyoid muscle and hyoid bone. In addition, an anomalous main ABDM was observed in 10 % of the specimens inserting through a transverse tendon into the hyoid bone. Variations in the digastric muscle are common especially the accessory bellies, therefore, a comprehensive understanding of these anatomical variations could be of clinical importance to the surgeons during head and neck radiological diagnosis and surgical interventions.
author	Guambe,Khayelihle De-Gama,Brenda Z Pillay,Pamela Satyapal,Kapil S
author_facet	Guambe,Khayelihle De-Gama,Brenda Z Pillay,Pamela Satyapal,Kapil S
author_sort	Guambe,Khayelihle
title	Anatomical Variations of the Anterior Belly of the Digastric Muscle
title_short	Anatomical Variations of the Anterior Belly of the Digastric Muscle
title_full	Anatomical Variations of the Anterior Belly of the Digastric Muscle
title_fullStr	Anatomical Variations of the Anterior Belly of the Digastric Muscle
title_full_unstemmed	Anatomical Variations of the Anterior Belly of the Digastric Muscle
title_sort	anatomical variations of the anterior belly of the digastric muscle
publisher	Sociedad Chilena de Anatomía
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022019000401504
work_keys_str_mv	AT guambekhayelihle anatomicalvariationsoftheanteriorbellyofthedigastricmuscle AT degamabrendaz anatomicalvariationsoftheanteriorbellyofthedigastricmuscle AT pillaypamela anatomicalvariationsoftheanteriorbellyofthedigastricmuscle AT satyapalkapils anatomicalvariationsoftheanteriorbellyofthedigastricmuscle
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Anatomical Variations of the Anterior Belly of the Digastric Muscle

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