Risk factor for elbow symptom manifestation in young baseball players with asymptomatic medial elbow abnormalities: a prospective cohort study

Abstract Asymptomatic elbow abnormalities are relatively common in young baseball players, but the factors responsible are unclear. To prospectively identify risk factors related to symptom manifestation in asymptomatic elbow abnormalities, we recruited 573 baseball players (age: 7–14 years) at a pr...

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Autores principales:	Hitoshi Shitara, Tsuyoshi Tajika, Takuro Kuboi, Tsuyoshi Ichinose, Tsuyoshi Sasaki, Noritaka Hamano, Fumitaka Endo, Masataka Kamiyama, Ryosuke Miyamoto, Kurumi Nakase, Atsushi Yamamoto, Tsutomu Kobayashi, Kenji Takagishi, Hirotaka Chikuda
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f1c9a41939a544d591760b3f1eb99e8e
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spelling	oai:doaj.org-article:f1c9a41939a544d591760b3f1eb99e8e2021-12-02T17:45:03ZRisk factor for elbow symptom manifestation in young baseball players with asymptomatic medial elbow abnormalities: a prospective cohort study10.1038/s41598-021-92570-92045-2322https://doaj.org/article/f1c9a41939a544d591760b3f1eb99e8e2021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92570-9https://doaj.org/toc/2045-2322Abstract Asymptomatic elbow abnormalities are relatively common in young baseball players, but the factors responsible are unclear. To prospectively identify risk factors related to symptom manifestation in asymptomatic elbow abnormalities, we recruited 573 baseball players (age: 7–14 years) at a pre-participation medical/physical examination in the preseason who were right-handed and had asymptomatic medial elbow abnormalities on ultrasound (US). Baseline preseason and postseason participant characteristics were assessed. A “symptomatic” elbow was defined as an elbow with medial elbow joint problems that prevented ball throwing for ≥ 8 days. After exclusions, 82 players were enrolled, of whom 22 (26.8%) developed a symptomatic elbow. In univariate analyses, the external and internal rotation strengths of the dominant shoulder were significantly greater in the symptomatic group than in the asymptomatic group (P = 0.021). Multivariate logistic regression analysis showed that the internal rotation strength of the dominant shoulder was a significant independent risk factor (odds ratio = 1.091, P = 0.027) for developing a symptomatic elbow. In young asymptomatic baseball players with abnormalities in the medial elbow region of the dominant arm on US, stronger preseason internal rotation strength of the dominant shoulder was a significant independent risk factor for the development of a “symptomatic” elbow.Hitoshi ShitaraTsuyoshi TajikaTakuro KuboiTsuyoshi IchinoseTsuyoshi SasakiNoritaka HamanoFumitaka EndoMasataka KamiyamaRyosuke MiyamotoKurumi NakaseAtsushi YamamotoTsutomu KobayashiKenji TakagishiHirotaka ChikudaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hitoshi Shitara Tsuyoshi Tajika Takuro Kuboi Tsuyoshi Ichinose Tsuyoshi Sasaki Noritaka Hamano Fumitaka Endo Masataka Kamiyama Ryosuke Miyamoto Kurumi Nakase Atsushi Yamamoto Tsutomu Kobayashi Kenji Takagishi Hirotaka Chikuda Risk factor for elbow symptom manifestation in young baseball players with asymptomatic medial elbow abnormalities: a prospective cohort study
description	Abstract Asymptomatic elbow abnormalities are relatively common in young baseball players, but the factors responsible are unclear. To prospectively identify risk factors related to symptom manifestation in asymptomatic elbow abnormalities, we recruited 573 baseball players (age: 7–14 years) at a pre-participation medical/physical examination in the preseason who were right-handed and had asymptomatic medial elbow abnormalities on ultrasound (US). Baseline preseason and postseason participant characteristics were assessed. A “symptomatic” elbow was defined as an elbow with medial elbow joint problems that prevented ball throwing for ≥ 8 days. After exclusions, 82 players were enrolled, of whom 22 (26.8%) developed a symptomatic elbow. In univariate analyses, the external and internal rotation strengths of the dominant shoulder were significantly greater in the symptomatic group than in the asymptomatic group (P = 0.021). Multivariate logistic regression analysis showed that the internal rotation strength of the dominant shoulder was a significant independent risk factor (odds ratio = 1.091, P = 0.027) for developing a symptomatic elbow. In young asymptomatic baseball players with abnormalities in the medial elbow region of the dominant arm on US, stronger preseason internal rotation strength of the dominant shoulder was a significant independent risk factor for the development of a “symptomatic” elbow.
format	article
author	Hitoshi Shitara Tsuyoshi Tajika Takuro Kuboi Tsuyoshi Ichinose Tsuyoshi Sasaki Noritaka Hamano Fumitaka Endo Masataka Kamiyama Ryosuke Miyamoto Kurumi Nakase Atsushi Yamamoto Tsutomu Kobayashi Kenji Takagishi Hirotaka Chikuda
author_facet	Hitoshi Shitara Tsuyoshi Tajika Takuro Kuboi Tsuyoshi Ichinose Tsuyoshi Sasaki Noritaka Hamano Fumitaka Endo Masataka Kamiyama Ryosuke Miyamoto Kurumi Nakase Atsushi Yamamoto Tsutomu Kobayashi Kenji Takagishi Hirotaka Chikuda
author_sort	Hitoshi Shitara
title	Risk factor for elbow symptom manifestation in young baseball players with asymptomatic medial elbow abnormalities: a prospective cohort study
title_short	Risk factor for elbow symptom manifestation in young baseball players with asymptomatic medial elbow abnormalities: a prospective cohort study
title_full	Risk factor for elbow symptom manifestation in young baseball players with asymptomatic medial elbow abnormalities: a prospective cohort study
title_fullStr	Risk factor for elbow symptom manifestation in young baseball players with asymptomatic medial elbow abnormalities: a prospective cohort study
title_full_unstemmed	Risk factor for elbow symptom manifestation in young baseball players with asymptomatic medial elbow abnormalities: a prospective cohort study
title_sort	risk factor for elbow symptom manifestation in young baseball players with asymptomatic medial elbow abnormalities: a prospective cohort study
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f1c9a41939a544d591760b3f1eb99e8e
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Risk factor for elbow symptom manifestation in young baseball players with asymptomatic medial elbow abnormalities: a prospective cohort study

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