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BioMed Research International
Volume 2017, Article ID 4821968, 5 pages
Research Article

Anatomical Basis of the Myofascial Trigger Points of the Gluteus Maximus Muscle

1Department of Surgery, Laboratory of Medical Research (LIM 02), Division of Human Structural Topography, Faculty of Medicine of the University of São Paulo (FMUSP), São Paulo, SP, Brazil
2Department of Surgery Medicine, Laboratory of Medical Research (LIM 02), FMUSP, São Paulo, SP, Brazil
3Department of Pathology, Discipline of Telemedicine, FMUSP, São Paulo, SP, Brazil

Correspondence should be addressed to Flavia Emi Akamatsu; rb.psu@aealf

Received 18 May 2017; Accepted 1 November 2017; Published 16 November 2017

Academic Editor: Gianluca Coppola

Copyright © 2017 Flavia Emi Akamatsu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Myofascial pain syndrome is characterized by pain and limited range of motion in joints and caused by muscular contracture related to dysfunctional motor end plates and myofascial trigger points (MTrPs). We aimed to observe the anatomical correlation between the clinically described MTrPs and the entry point of the branches of the inferior gluteal nerve into the gluteus maximus muscle. We dissected twenty gluteus maximus muscles from 10 human adult cadavers (5 males and 5 females). We measured the muscles and compiled the distribution of the nerve branches into each of the quadrants of the muscle. Statistical analysis was performed by using Student’s t-test and Kruskal-Wallis tests. Although no difference was observed either for muscle measurements or for distribution of nerve branching among the subjects, the topography of MTrPs matched the anatomical location of the entry points into the muscle. Thus, anatomical substract of the MTrPs may be useful for a better understanding of the physiopathology of these disorders and provide basis for their surgical and clinical treatment.