Morphological variant of pronator quadratus muscle : a case report

Presented herein is a case of one different morphological anomaly of pronator quadratus (PQ) muscle. Here, the shape of PQ was not similar to the normal morphology of the muscle. The PQ muscle appeared to be in distinct triangular-shaped instead of quadrangular-shaped. In addition, this triangul...

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Main Authors: Ahmad Ruzain S, Zar, Chi T, Syed Baharom Syed Ahmad Fuad
Format: Article
Language:en
Published: Pusat Perubatan Universiti Kebangsaan Malaysia 2018
Online Access:http://journalarticle.ukm.my/20617/1/16_ms0192_pdf_40035.pdf
http://journalarticle.ukm.my/20617/
https://www.medicineandhealthukm.com/toc/13/2
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author Ahmad Ruzain S,
Zar, Chi T
Syed Baharom Syed Ahmad Fuad,
author_facet Ahmad Ruzain S,
Zar, Chi T
Syed Baharom Syed Ahmad Fuad,
author_sort Ahmad Ruzain S,
building Tun Sri Lanang Library
collection Institutional Repository
content_provider Universiti Kebangsaan Malaysia
content_source UKM Journal Article Repository
continent Asia
country Malaysia
description Presented herein is a case of one different morphological anomaly of pronator quadratus (PQ) muscle. Here, the shape of PQ was not similar to the normal morphology of the muscle. The PQ muscle appeared to be in distinct triangular-shaped instead of quadrangular-shaped. In addition, this triangular-shaped was found in two sites i.e. proximal and distal. Significantly, the PQ muscle consisted of two fleshy red fibres and white aponeurosis. Proximally placed portion had a wide base and a narrower apex. The larger base was attached to the ulna and formed of fleshy red fibres which converged laterally to be continuous with aponeurosis ending on the radius. In contrast, the distal triangular portion had the fleshy fibres attached to the radius and converged medially to be continuous with aponeurotic portions on the ulna. Each portion were referred as pronator triangularis proximalis and pronator triangularis distalis. These variations might affect atypically in cases of forearm pronation. Information of these variations is important in hand surgeries and provide an additional knowledge on the relationship between morphology of PQ muscle and the limitation or the strength in the action of it.
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institution Universiti Kebangsaan Malaysia
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spelling my-ukm.journal.206172022-11-28T13:08:39Z http://journalarticle.ukm.my/20617/ Morphological variant of pronator quadratus muscle : a case report Ahmad Ruzain S, Zar, Chi T Syed Baharom Syed Ahmad Fuad, Presented herein is a case of one different morphological anomaly of pronator quadratus (PQ) muscle. Here, the shape of PQ was not similar to the normal morphology of the muscle. The PQ muscle appeared to be in distinct triangular-shaped instead of quadrangular-shaped. In addition, this triangular-shaped was found in two sites i.e. proximal and distal. Significantly, the PQ muscle consisted of two fleshy red fibres and white aponeurosis. Proximally placed portion had a wide base and a narrower apex. The larger base was attached to the ulna and formed of fleshy red fibres which converged laterally to be continuous with aponeurosis ending on the radius. In contrast, the distal triangular portion had the fleshy fibres attached to the radius and converged medially to be continuous with aponeurotic portions on the ulna. Each portion were referred as pronator triangularis proximalis and pronator triangularis distalis. These variations might affect atypically in cases of forearm pronation. Information of these variations is important in hand surgeries and provide an additional knowledge on the relationship between morphology of PQ muscle and the limitation or the strength in the action of it. Pusat Perubatan Universiti Kebangsaan Malaysia 2018-12 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/20617/1/16_ms0192_pdf_40035.pdf Ahmad Ruzain S, and Zar, Chi T and Syed Baharom Syed Ahmad Fuad, (2018) Morphological variant of pronator quadratus muscle : a case report. Medicine & Health, 13 (2). pp. 164-169. ISSN 2289-5728 https://www.medicineandhealthukm.com/toc/13/2
spellingShingle Ahmad Ruzain S,
Zar, Chi T
Syed Baharom Syed Ahmad Fuad,
Morphological variant of pronator quadratus muscle : a case report
title Morphological variant of pronator quadratus muscle : a case report
title_full Morphological variant of pronator quadratus muscle : a case report
title_fullStr Morphological variant of pronator quadratus muscle : a case report
title_full_unstemmed Morphological variant of pronator quadratus muscle : a case report
title_short Morphological variant of pronator quadratus muscle : a case report
title_sort morphological variant of pronator quadratus muscle : a case report
url http://journalarticle.ukm.my/20617/1/16_ms0192_pdf_40035.pdf
http://journalarticle.ukm.my/20617/
https://www.medicineandhealthukm.com/toc/13/2
url_provider http://journalarticle.ukm.my/