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Changes in elbow joint contact area in symptomatic valgus instability of the elbow in baseball players

The aim of this study was to evaluate the joint contact area of the dominant side and that of the non-dominant side without valgus instability in symptomatic pitchers. Ten symptomatic elbow medial ulnar collateral ligament (UCL) deficient baseball pitchers participated in this study. Computed tomogr...

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Autores principales: Numaguchi, Kyosuke, Momma, Daisuke, Matsui, Yuki, Oohinata, Jun, Yamaguchi, Takayoshi, Inoue, Nozomu, Kondo, Eiji, Iwasaki, Norimasa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8492740/
https://www.ncbi.nlm.nih.gov/pubmed/34611207
http://dx.doi.org/10.1038/s41598-021-99193-0
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author Numaguchi, Kyosuke
Momma, Daisuke
Matsui, Yuki
Oohinata, Jun
Yamaguchi, Takayoshi
Inoue, Nozomu
Kondo, Eiji
Iwasaki, Norimasa
author_facet Numaguchi, Kyosuke
Momma, Daisuke
Matsui, Yuki
Oohinata, Jun
Yamaguchi, Takayoshi
Inoue, Nozomu
Kondo, Eiji
Iwasaki, Norimasa
author_sort Numaguchi, Kyosuke
collection PubMed
description The aim of this study was to evaluate the joint contact area of the dominant side and that of the non-dominant side without valgus instability in symptomatic pitchers. Ten symptomatic elbow medial ulnar collateral ligament (UCL) deficient baseball pitchers participated in this study. Computed tomography (CT) data from the dominant and non-dominant elbows were obtained with and without elbow valgus stress. The CT imaging data of each elbow joint were reconstructed using a 3D reconstruction software package, and the radiocapitellar and ulnohumeral joint contact areas were calculated. The center of the contact area and the translation from the position without stress to the position with valgus stress were also calculated. With elbow valgus stress, the contact area changed, and the center of the radiocapitellar joint contact area translated significantly more laterally in the dominant elbow than in the non-dominant elbow (p = 0.0361). In addition, the center of the ulnohumeral joint contact area translated significantly more posteriorly in the dominant elbow than in the non-dominant elbow (p = 0.0413). These changes in contact areas could be the reason for cartilage injury at the posterior trochlea in pitchers with UCL deficiency.
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spelling pubmed-84927402021-10-07 Changes in elbow joint contact area in symptomatic valgus instability of the elbow in baseball players Numaguchi, Kyosuke Momma, Daisuke Matsui, Yuki Oohinata, Jun Yamaguchi, Takayoshi Inoue, Nozomu Kondo, Eiji Iwasaki, Norimasa Sci Rep Article The aim of this study was to evaluate the joint contact area of the dominant side and that of the non-dominant side without valgus instability in symptomatic pitchers. Ten symptomatic elbow medial ulnar collateral ligament (UCL) deficient baseball pitchers participated in this study. Computed tomography (CT) data from the dominant and non-dominant elbows were obtained with and without elbow valgus stress. The CT imaging data of each elbow joint were reconstructed using a 3D reconstruction software package, and the radiocapitellar and ulnohumeral joint contact areas were calculated. The center of the contact area and the translation from the position without stress to the position with valgus stress were also calculated. With elbow valgus stress, the contact area changed, and the center of the radiocapitellar joint contact area translated significantly more laterally in the dominant elbow than in the non-dominant elbow (p = 0.0361). In addition, the center of the ulnohumeral joint contact area translated significantly more posteriorly in the dominant elbow than in the non-dominant elbow (p = 0.0413). These changes in contact areas could be the reason for cartilage injury at the posterior trochlea in pitchers with UCL deficiency. Nature Publishing Group UK 2021-10-05 /pmc/articles/PMC8492740/ /pubmed/34611207 http://dx.doi.org/10.1038/s41598-021-99193-0 Text en © The Author(s) 2021 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
Numaguchi, Kyosuke
Momma, Daisuke
Matsui, Yuki
Oohinata, Jun
Yamaguchi, Takayoshi
Inoue, Nozomu
Kondo, Eiji
Iwasaki, Norimasa
Changes in elbow joint contact area in symptomatic valgus instability of the elbow in baseball players
title Changes in elbow joint contact area in symptomatic valgus instability of the elbow in baseball players
title_full Changes in elbow joint contact area in symptomatic valgus instability of the elbow in baseball players
title_fullStr Changes in elbow joint contact area in symptomatic valgus instability of the elbow in baseball players
title_full_unstemmed Changes in elbow joint contact area in symptomatic valgus instability of the elbow in baseball players
title_short Changes in elbow joint contact area in symptomatic valgus instability of the elbow in baseball players
title_sort changes in elbow joint contact area in symptomatic valgus instability of the elbow in baseball players
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8492740/
https://www.ncbi.nlm.nih.gov/pubmed/34611207
http://dx.doi.org/10.1038/s41598-021-99193-0
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