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In vivo magnetic resonance imaging study of the hip joint capsule in the flexion abduction external rotation position
Although the flexion abduction external rotation (FABER) test is a useful hip provocation test, hip soft tissue characteristics in the FABER position remain unclear. This study investigated the in-vivo joint capsule characteristics, including its articular cavity area and relation to the fat pad sur...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9033789/ https://www.ncbi.nlm.nih.gov/pubmed/35459931 http://dx.doi.org/10.1038/s41598-022-10718-7 |
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author | Tsutsumi, Masahiro Yamaguchi, Isao Nimura, Akimoto Utsunomiya, Hajime Akita, Keiichi Kudo, Shintarou |
author_facet | Tsutsumi, Masahiro Yamaguchi, Isao Nimura, Akimoto Utsunomiya, Hajime Akita, Keiichi Kudo, Shintarou |
author_sort | Tsutsumi, Masahiro |
collection | PubMed |
description | Although the flexion abduction external rotation (FABER) test is a useful hip provocation test, hip soft tissue characteristics in the FABER position remain unclear. This study investigated the in-vivo joint capsule characteristics, including its articular cavity area and relation to the fat pad surrounded by the joint capsule and pericapsular muscles, in the FABER position using magnetic resonance imaging. Thirteen hips from 13 healthy volunteers were analyzed. The images were obtained, with the participant hips at 15°-extension, 45°-flexion, and in the FABER position, to analyze the articular cavity size and fat pad and calculate these ratios to size of the femoral neck. The articular cavity area and its ratio to the femoral neck were significantly greatest in the FABER position, followed by those in the hip flexion and extension. Additionally, the area of the fat pad in the inter-pericapsular muscle space and its ratio to the femoral neck in the FABER position were significantly larger than those in the hip flexion and, as a tendency, larger than those in hip extension. To the best of our knowledge, this is the first in-vivo study to show the interrelationship among the joint capsule, pericapsular muscles, and fat pad in the FABER position. |
format | Online Article Text |
id | pubmed-9033789 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-90337892022-04-25 In vivo magnetic resonance imaging study of the hip joint capsule in the flexion abduction external rotation position Tsutsumi, Masahiro Yamaguchi, Isao Nimura, Akimoto Utsunomiya, Hajime Akita, Keiichi Kudo, Shintarou Sci Rep Article Although the flexion abduction external rotation (FABER) test is a useful hip provocation test, hip soft tissue characteristics in the FABER position remain unclear. This study investigated the in-vivo joint capsule characteristics, including its articular cavity area and relation to the fat pad surrounded by the joint capsule and pericapsular muscles, in the FABER position using magnetic resonance imaging. Thirteen hips from 13 healthy volunteers were analyzed. The images were obtained, with the participant hips at 15°-extension, 45°-flexion, and in the FABER position, to analyze the articular cavity size and fat pad and calculate these ratios to size of the femoral neck. The articular cavity area and its ratio to the femoral neck were significantly greatest in the FABER position, followed by those in the hip flexion and extension. Additionally, the area of the fat pad in the inter-pericapsular muscle space and its ratio to the femoral neck in the FABER position were significantly larger than those in the hip flexion and, as a tendency, larger than those in hip extension. To the best of our knowledge, this is the first in-vivo study to show the interrelationship among the joint capsule, pericapsular muscles, and fat pad in the FABER position. Nature Publishing Group UK 2022-04-22 /pmc/articles/PMC9033789/ /pubmed/35459931 http://dx.doi.org/10.1038/s41598-022-10718-7 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Tsutsumi, Masahiro Yamaguchi, Isao Nimura, Akimoto Utsunomiya, Hajime Akita, Keiichi Kudo, Shintarou In vivo magnetic resonance imaging study of the hip joint capsule in the flexion abduction external rotation position |
title | In vivo magnetic resonance imaging study of the hip joint capsule in the flexion abduction external rotation position |
title_full | In vivo magnetic resonance imaging study of the hip joint capsule in the flexion abduction external rotation position |
title_fullStr | In vivo magnetic resonance imaging study of the hip joint capsule in the flexion abduction external rotation position |
title_full_unstemmed | In vivo magnetic resonance imaging study of the hip joint capsule in the flexion abduction external rotation position |
title_short | In vivo magnetic resonance imaging study of the hip joint capsule in the flexion abduction external rotation position |
title_sort | in vivo magnetic resonance imaging study of the hip joint capsule in the flexion abduction external rotation position |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9033789/ https://www.ncbi.nlm.nih.gov/pubmed/35459931 http://dx.doi.org/10.1038/s41598-022-10718-7 |
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