Anatomical study of the obturator internus, gemelli and quadratus femoris muscles with special reference to their innervation

The manner of innervation of the obturator internus, superior and inferior gemelli, and the quadratus femoris in humans (101 pelvic halves) and in rheus monkeys (Macaca mulatta: 8 pelvic halves) were investigated. In most specimens, the inferior gemellus originated from the lateral surface of the is...

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Main Authors:	Aung, Htar Htar, Sakamoto, Hirokazu, Akita, Keiichi, Sato, Tatsuo
Format:	Article
Language:	English
Published:	Wiley-Liss, INC. 2001
Subjects:	QM Human anatomy
Online Access:	http://irep.iium.edu.my/2164/ http://irep.iium.edu.my/2164/ http://irep.iium.edu.my/2164/ http://irep.iium.edu.my/2164/1/anatomy_study.pdf

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spelling	iium-21642013-01-29T02:52:17Z http://irep.iium.edu.my/2164/ Anatomical study of the obturator internus, gemelli and quadratus femoris muscles with special reference to their innervation Aung, Htar Htar Sakamoto, Hirokazu Akita, Keiichi Sato, Tatsuo QM Human anatomy The manner of innervation of the obturator internus, superior and inferior gemelli, and the quadratus femoris in humans (101 pelvic halves) and in rheus monkeys (Macaca mulatta: 8 pelvic halves) were investigated. In most specimens, the inferior gemellus originated from the lateral surface of the ischial tuberosity and also from the medial surface (intrapelvic origin) just beneath the obturator internus and was covered by the falciform process of the sacrotuberous ligament. The superior gemellus was frequently innervated by the nerve to the obturator internus and the nerve to the quadratus femoris (60.4%) qnd the inferior gemellus was innervated by the obturator internus nerve in two specimens. The quadratus femoris nerve originated from more cranial segments than the obturator internus nerve, however these nerves had various communication patterns inside and outside the muscles. According to the intramuscular nerve distribution, in some specimens the branches to the superior gemellus from the quadratus femoris nerve extended to the inferior gemellus, and the branches to the inferior gemellus were distributed to the obturator internus. The present findings revealed that the positional relationships among the branches to the obturator internus and gemelli muscles are relatively constant, although the branching patterns and innervation patterns were varied. The various patterns and routes are considered to reflect the variability of the differentiation patterns of the anlage of the muscles. A possible schematic model of the positional relationships between the muscles and the nerves is proposed. Key Words: obturator internus; quadratus femoris; gemelli muscles; innervation; sacral plexus; human gross anatomy; comparative morphology Wiley-Liss, INC. 2001-03 Article PeerReviewed application/pdf en http://irep.iium.edu.my/2164/1/anatomy_study.pdf Aung, Htar Htar and Sakamoto, Hirokazu and Akita, Keiichi and Sato, Tatsuo (2001) Anatomical study of the obturator internus, gemelli and quadratus femoris muscles with special reference to their innervation. The Anatomical Record, 263. pp. 41-52. ISSN 1932-8494 http://onlinelibrary.wiley.com/doi/10.1002/ar.1075/pdf 10.1002/ar.1075
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	QM Human anatomy
spellingShingle	QM Human anatomy Aung, Htar Htar Sakamoto, Hirokazu Akita, Keiichi Sato, Tatsuo Anatomical study of the obturator internus, gemelli and quadratus femoris muscles with special reference to their innervation
description	The manner of innervation of the obturator internus, superior and inferior gemelli, and the quadratus femoris in humans (101 pelvic halves) and in rheus monkeys (Macaca mulatta: 8 pelvic halves) were investigated. In most specimens, the inferior gemellus originated from the lateral surface of the ischial tuberosity and also from the medial surface (intrapelvic origin) just beneath the obturator internus and was covered by the falciform process of the sacrotuberous ligament. The superior gemellus was frequently innervated by the nerve to the obturator internus and the nerve to the quadratus femoris (60.4%) qnd the inferior gemellus was innervated by the obturator internus nerve in two specimens. The quadratus femoris nerve originated from more cranial segments than the obturator internus nerve, however these nerves had various communication patterns inside and outside the muscles. According to the intramuscular nerve distribution, in some specimens the branches to the superior gemellus from the quadratus femoris nerve extended to the inferior gemellus, and the branches to the inferior gemellus were distributed to the obturator internus. The present findings revealed that the positional relationships among the branches to the obturator internus and gemelli muscles are relatively constant, although the branching patterns and innervation patterns were varied. The various patterns and routes are considered to reflect the variability of the differentiation patterns of the anlage of the muscles. A possible schematic model of the positional relationships between the muscles and the nerves is proposed. Key Words: obturator internus; quadratus femoris; gemelli muscles; innervation; sacral plexus; human gross anatomy; comparative morphology
format	Article
author	Aung, Htar Htar Sakamoto, Hirokazu Akita, Keiichi Sato, Tatsuo
author_facet	Aung, Htar Htar Sakamoto, Hirokazu Akita, Keiichi Sato, Tatsuo
author_sort	Aung, Htar Htar
title	Anatomical study of the obturator internus, gemelli and quadratus femoris muscles with special reference to their innervation
title_short	Anatomical study of the obturator internus, gemelli and quadratus femoris muscles with special reference to their innervation
title_full	Anatomical study of the obturator internus, gemelli and quadratus femoris muscles with special reference to their innervation
title_fullStr	Anatomical study of the obturator internus, gemelli and quadratus femoris muscles with special reference to their innervation
title_full_unstemmed	Anatomical study of the obturator internus, gemelli and quadratus femoris muscles with special reference to their innervation
title_sort	anatomical study of the obturator internus, gemelli and quadratus femoris muscles with special reference to their innervation
publisher	Wiley-Liss, INC.
publishDate	2001
url	http://irep.iium.edu.my/2164/ http://irep.iium.edu.my/2164/ http://irep.iium.edu.my/2164/ http://irep.iium.edu.my/2164/1/anatomy_study.pdf
first_indexed	2023-09-18T20:09:42Z
last_indexed	2023-09-18T20:09:42Z
_version_	1777407394985279488

Anatomical study of the obturator internus, gemelli and quadratus femoris muscles with special reference to their innervation

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