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Anatomical study for elucidating the stabilization mechanism in the trapeziometacarpal joint

To determine the pathogenesis of trapeziometacarpal (TMC) joint instability, which leads to osteoarthritis, we investigated the anatomical relationships among the surrounding ligaments, muscles (first dorsal interosseous [FDI] and opponens pollicis [OPP]), and joint capsule. We examined the bone mor...

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Autores principales: Norose, Mio, Nimura, Akimoto, Tsutsumi, Masahiro, Fujita, Koji, Okawa, Atsushi, Akita, Keiichi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9715720/
https://www.ncbi.nlm.nih.gov/pubmed/36456627
http://dx.doi.org/10.1038/s41598-022-25355-3
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author Norose, Mio
Nimura, Akimoto
Tsutsumi, Masahiro
Fujita, Koji
Okawa, Atsushi
Akita, Keiichi
author_facet Norose, Mio
Nimura, Akimoto
Tsutsumi, Masahiro
Fujita, Koji
Okawa, Atsushi
Akita, Keiichi
author_sort Norose, Mio
collection PubMed
description To determine the pathogenesis of trapeziometacarpal (TMC) joint instability, which leads to osteoarthritis, we investigated the anatomical relationships among the surrounding ligaments, muscles (first dorsal interosseous [FDI] and opponens pollicis [OPP]), and joint capsule. We examined the bone morphology and cortical bone thickening in 25 cadaveric thumbs using micro-computed tomography and performed macroscopic and histological analyses. The dorsal trapezium had a tubercle with cortical bone thickening, corresponding to the attachment of the FDI aponeurosis intermingled with the joint capsule. Radially, the thin joint capsule was observed to underlie the muscular part of the OPP. Therefore, the dorsal ligaments, which have been previously considered static stabilizers, could be interpreted as parts of the capsuloaponeurotic complex consisting of the FDI aponeurosis and joint capsule. In the radial aspect, muscular OPP activation may be essential for TMC joint stabilization. Our findings may contribute to the appropriate management of TMC osteoarthritis.
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spelling pubmed-97157202022-12-03 Anatomical study for elucidating the stabilization mechanism in the trapeziometacarpal joint Norose, Mio Nimura, Akimoto Tsutsumi, Masahiro Fujita, Koji Okawa, Atsushi Akita, Keiichi Sci Rep Article To determine the pathogenesis of trapeziometacarpal (TMC) joint instability, which leads to osteoarthritis, we investigated the anatomical relationships among the surrounding ligaments, muscles (first dorsal interosseous [FDI] and opponens pollicis [OPP]), and joint capsule. We examined the bone morphology and cortical bone thickening in 25 cadaveric thumbs using micro-computed tomography and performed macroscopic and histological analyses. The dorsal trapezium had a tubercle with cortical bone thickening, corresponding to the attachment of the FDI aponeurosis intermingled with the joint capsule. Radially, the thin joint capsule was observed to underlie the muscular part of the OPP. Therefore, the dorsal ligaments, which have been previously considered static stabilizers, could be interpreted as parts of the capsuloaponeurotic complex consisting of the FDI aponeurosis and joint capsule. In the radial aspect, muscular OPP activation may be essential for TMC joint stabilization. Our findings may contribute to the appropriate management of TMC osteoarthritis. Nature Publishing Group UK 2022-12-01 /pmc/articles/PMC9715720/ /pubmed/36456627 http://dx.doi.org/10.1038/s41598-022-25355-3 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
Norose, Mio
Nimura, Akimoto
Tsutsumi, Masahiro
Fujita, Koji
Okawa, Atsushi
Akita, Keiichi
Anatomical study for elucidating the stabilization mechanism in the trapeziometacarpal joint
title Anatomical study for elucidating the stabilization mechanism in the trapeziometacarpal joint
title_full Anatomical study for elucidating the stabilization mechanism in the trapeziometacarpal joint
title_fullStr Anatomical study for elucidating the stabilization mechanism in the trapeziometacarpal joint
title_full_unstemmed Anatomical study for elucidating the stabilization mechanism in the trapeziometacarpal joint
title_short Anatomical study for elucidating the stabilization mechanism in the trapeziometacarpal joint
title_sort anatomical study for elucidating the stabilization mechanism in the trapeziometacarpal joint
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9715720/
https://www.ncbi.nlm.nih.gov/pubmed/36456627
http://dx.doi.org/10.1038/s41598-022-25355-3
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