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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/12701/1/24_zar_chi_et_al_pdf_15202.pdf
http://journalarticle.ukm.my/12701/
http://www.medicineandhealthukm.com/toc/12/2
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spelling my-ukm.journal.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
institution Universiti Kebangsaan Malaysia
building Perpustakaan Tun Sri Lanang Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Kebangsaan Malaysia
content_source UKM Journal Article Repository
url_provider http://journalarticle.ukm.my/
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/12701/1/24_zar_chi_et_al_pdf_15202.pdf
http://journalarticle.ukm.my/12701/
http://www.medicineandhealthukm.com/toc/12/2
_version_ 1643738863762407424
score 13.211869

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