Spatial distribution of loose connective tissues on the anterior hip joint capsule: a combination of cadaveric and in-vivo study

Abstract Recently, pathological changes in the fat pad on the anterior inferior iliac spine (AIIS), between the proximal rectus femoris and joint capsule, have been highlighted as a cause of anterior hip pain. However, precise fat pad features, such as the spatial distribution distal to the AIIS, hi...

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Autores principales:	Masahiro Tsutsumi, Akimoto Nimura, Hajime Utsunomiya, Shintarou Kudo, Keiichi Akita
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/279b7b0e016c45c1a842fbf35abdd072
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spelling	oai:doaj.org-article:279b7b0e016c45c1a842fbf35abdd0722021-11-28T12:21:43ZSpatial distribution of loose connective tissues on the anterior hip joint capsule: a combination of cadaveric and in-vivo study10.1038/s41598-021-02381-12045-2322https://doaj.org/article/279b7b0e016c45c1a842fbf35abdd0722021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-02381-1https://doaj.org/toc/2045-2322Abstract Recently, pathological changes in the fat pad on the anterior inferior iliac spine (AIIS), between the proximal rectus femoris and joint capsule, have been highlighted as a cause of anterior hip pain. However, precise fat pad features, such as the spatial distribution distal to the AIIS, histological features, and in vivo tissue elasticity, remain unclear. This study aimed to investigate the morphological characteristics of the fat pad on the AIIS. Four hips from four cadaveric donors were both macroscopically and histologically investigated, and eight hips from four volunteers were assessed using ultrasonography. The fat pad on the AIIS was also surrounded by the iliopsoas and gluteus minimus, extending distally to the superficial portion of the vastus lateralis, and the anterior portion of the gluteus maximus tendon. Histological analysis revealed that the fat pad was composed of loose connective tissue. Based on the ultrasonography, the shear wave velocity in the fat pad was significantly lower than that in the joint capsule. Conclusively, the pathological adhesion between the joint capsule and pericapsular muscles, if caused by fat pad fibrosis, may occur following the abovementioned fat pad spatial distribution.Masahiro TsutsumiAkimoto NimuraHajime UtsunomiyaShintarou KudoKeiichi AkitaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Masahiro Tsutsumi Akimoto Nimura Hajime Utsunomiya Shintarou Kudo Keiichi Akita Spatial distribution of loose connective tissues on the anterior hip joint capsule: a combination of cadaveric and in-vivo study
description	Abstract Recently, pathological changes in the fat pad on the anterior inferior iliac spine (AIIS), between the proximal rectus femoris and joint capsule, have been highlighted as a cause of anterior hip pain. However, precise fat pad features, such as the spatial distribution distal to the AIIS, histological features, and in vivo tissue elasticity, remain unclear. This study aimed to investigate the morphological characteristics of the fat pad on the AIIS. Four hips from four cadaveric donors were both macroscopically and histologically investigated, and eight hips from four volunteers were assessed using ultrasonography. The fat pad on the AIIS was also surrounded by the iliopsoas and gluteus minimus, extending distally to the superficial portion of the vastus lateralis, and the anterior portion of the gluteus maximus tendon. Histological analysis revealed that the fat pad was composed of loose connective tissue. Based on the ultrasonography, the shear wave velocity in the fat pad was significantly lower than that in the joint capsule. Conclusively, the pathological adhesion between the joint capsule and pericapsular muscles, if caused by fat pad fibrosis, may occur following the abovementioned fat pad spatial distribution.
format	article
author	Masahiro Tsutsumi Akimoto Nimura Hajime Utsunomiya Shintarou Kudo Keiichi Akita
author_facet	Masahiro Tsutsumi Akimoto Nimura Hajime Utsunomiya Shintarou Kudo Keiichi Akita
author_sort	Masahiro Tsutsumi
title	Spatial distribution of loose connective tissues on the anterior hip joint capsule: a combination of cadaveric and in-vivo study
title_short	Spatial distribution of loose connective tissues on the anterior hip joint capsule: a combination of cadaveric and in-vivo study
title_full	Spatial distribution of loose connective tissues on the anterior hip joint capsule: a combination of cadaveric and in-vivo study
title_fullStr	Spatial distribution of loose connective tissues on the anterior hip joint capsule: a combination of cadaveric and in-vivo study
title_full_unstemmed	Spatial distribution of loose connective tissues on the anterior hip joint capsule: a combination of cadaveric and in-vivo study
title_sort	spatial distribution of loose connective tissues on the anterior hip joint capsule: a combination of cadaveric and in-vivo study
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/279b7b0e016c45c1a842fbf35abdd072
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Spatial distribution of loose connective tissues on the anterior hip joint capsule: a combination of cadaveric and in-vivo study

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