Anomalous third head of biceps brachii muscle and its variant insertion compresses surrounding neurovascular structure: a rare case report

Biceps brachii (BB) is one of the muscles which are subjected to many variations. Recently, there is a lot of information about variations in origin but also some cases are reported on variations in insertion of BB. Presented herein was a case of BB muscle having both variant origin and insertion in...

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Main Authors:	Zar, Chi T, Ahmad Ruzain S, Mohammad Johari I, Syed Baharom Syed Ahmad Fuad
Format:	Article
Language:	English
Published:	Pusat Perubatan Universiti Kebangsaan Malaysia 2017
Online Access:	http://journalarticle.ukm.my/12701/ http://journalarticle.ukm.my/12701/ http://journalarticle.ukm.my/12701/1/24_zar_chi_et_al_pdf_15202.pdf

id	ukm-12701
recordtype	eprints
spelling	ukm-127012019-03-17T12:15:44Z http://journalarticle.ukm.my/12701/ Anomalous third head of biceps brachii muscle and its variant insertion compresses surrounding neurovascular structure: a rare case report Zar, Chi T Ahmad Ruzain S, Mohammad Johari I, Syed Baharom Syed Ahmad Fuad, Biceps brachii (BB) is one of the muscles which are subjected to many variations. Recently, there is a lot of information about variations in origin but also some cases are reported on variations in insertion of BB. Presented herein was a case of BB muscle having both variant origin and insertion in the same muscle. The variant origin of BB was long and large at its third head (10.2 cm width and 4.9 cm breadth) which arises from mid-shaft of the humerus. More significantly, the medial portion of the head covers and conceals the lower portion of median nerve and brachial artery as an arch which continues medially to be inserted to the medial epicondyle of the humerus. We discuss in this report, the possible mechanism for neurovascular compression by this abnormal third head of BB muscle and the variation of BB from its origin and insertion. Understanding these variations is highly significant in surgical procedures around elbow joint and upper arm and it also pave the way for the differential diagnosis in nerve entrapment syndrome. Pusat Perubatan Universiti Kebangsaan Malaysia 2017 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/12701/1/24_zar_chi_et_al_pdf_15202.pdf Zar, Chi T and Ahmad Ruzain S, and Mohammad Johari I, and Syed Baharom Syed Ahmad Fuad, (2017) Anomalous third head of biceps brachii muscle and its variant insertion compresses surrounding neurovascular structure: a rare case report. Medicine & Health, 12 (2). pp. 368-374. ISSN 2289-5728 http://www.medicineandhealthukm.com/toc/12/2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	Biceps brachii (BB) is one of the muscles which are subjected to many variations. Recently, there is a lot of information about variations in origin but also some cases are reported on variations in insertion of BB. Presented herein was a case of BB muscle having both variant origin and insertion in the same muscle. The variant origin of BB was long and large at its third head (10.2 cm width and 4.9 cm breadth) which arises from mid-shaft of the humerus. More significantly, the medial portion of the head covers and conceals the lower portion of median nerve and brachial artery as an arch which continues medially to be inserted to the medial epicondyle of the humerus. We discuss in this report, the possible mechanism for neurovascular compression by this abnormal third head of BB muscle and the variation of BB from its origin and insertion. Understanding these variations is highly significant in surgical procedures around elbow joint and upper arm and it also pave the way for the differential diagnosis in nerve entrapment syndrome.
format	Article
author	Zar, Chi T Ahmad Ruzain S, Mohammad Johari I, Syed Baharom Syed Ahmad Fuad,
spellingShingle	Zar, Chi T Ahmad Ruzain S, Mohammad Johari I, Syed Baharom Syed Ahmad Fuad, Anomalous third head of biceps brachii muscle and its variant insertion compresses surrounding neurovascular structure: a rare case report
author_facet	Zar, Chi T Ahmad Ruzain S, Mohammad Johari I, Syed Baharom Syed Ahmad Fuad,
author_sort	Zar, Chi T
title	Anomalous third head of biceps brachii muscle and its variant insertion compresses surrounding neurovascular structure: a rare case report
title_short	Anomalous third head of biceps brachii muscle and its variant insertion compresses surrounding neurovascular structure: a rare case report
title_full	Anomalous third head of biceps brachii muscle and its variant insertion compresses surrounding neurovascular structure: a rare case report
title_fullStr	Anomalous third head of biceps brachii muscle and its variant insertion compresses surrounding neurovascular structure: a rare case report
title_full_unstemmed	Anomalous third head of biceps brachii muscle and its variant insertion compresses surrounding neurovascular structure: a rare case report
title_sort	anomalous third head of biceps brachii muscle and its variant insertion compresses surrounding neurovascular structure: a rare case report
publisher	Pusat Perubatan Universiti Kebangsaan Malaysia
publishDate	2017
url	http://journalarticle.ukm.my/12701/ http://journalarticle.ukm.my/12701/ http://journalarticle.ukm.my/12701/1/24_zar_chi_et_al_pdf_15202.pdf
first_indexed	2023-09-18T20:03:12Z
last_indexed	2023-09-18T20:03:12Z
_version_	1777406985853992960

Anomalous third head of biceps brachii muscle and its variant insertion compresses surrounding neurovascular structure: a rare case report

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