Cartilage Degeneration at Symptomatic Persistent Olecranon Physis in Adolescent Baseball Players

Background. Elbow overuse injuries are common in adolescent baseball players, but symptomatic persistent olecranon physis is rare, and its pathogenesis remains unclear. Purpose. To examine the histopathological and imaging findings of advanced persistent olecranon physis. Methods. The olecranon phy...

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Main Authors:	Enishi, Tetsuya, Matsuura, Tetsuya, Suzue, Naoto, Takahashi, Yoshinori, Sairyo, Koichi
Format:	Online
Language:	English
Published:	Hindawi Publishing Corporation 2014
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4281472/

id	pubmed-4281472
recordtype	oai_dc
spelling	pubmed-42814722015-01-11 Cartilage Degeneration at Symptomatic Persistent Olecranon Physis in Adolescent Baseball Players Enishi, Tetsuya Matsuura, Tetsuya Suzue, Naoto Takahashi, Yoshinori Sairyo, Koichi Research Article Background. Elbow overuse injuries are common in adolescent baseball players, but symptomatic persistent olecranon physis is rare, and its pathogenesis remains unclear. Purpose. To examine the histopathological and imaging findings of advanced persistent olecranon physis. Methods. The olecranon physes of 2 baseball pitchers, aged 14 and 15 years, were examined by preoperative magnetic resonance imaging (MRI), and surgical specimens were examined histologically. Results. T2-weighted MRI revealed alterations in the intrachondral signal intensity possibly related to collagen degeneration and increased free water content. Histological findings of specimens stained with hematoxylin-eosin showed complete disorganization of the cartilage structure, hypocellularity, chondrocyte cluster formation, and moderately reduced staining. All these findings are hallmarks of osteoarthritis and are suggestive of cartilage degeneration. Conclusion. Growth plate degeneration was evident in advanced cases of symptomatic persistent olecranon physis. These findings contribute to understanding the pathogenesis of this disease. Hindawi Publishing Corporation 2014 2014-12-18 /pmc/articles/PMC4281472/ /pubmed/25580304 http://dx.doi.org/10.1155/2014/545438 Text en Copyright © 2014 Tetsuya Enishi et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Enishi, Tetsuya Matsuura, Tetsuya Suzue, Naoto Takahashi, Yoshinori Sairyo, Koichi
spellingShingle	Enishi, Tetsuya Matsuura, Tetsuya Suzue, Naoto Takahashi, Yoshinori Sairyo, Koichi Cartilage Degeneration at Symptomatic Persistent Olecranon Physis in Adolescent Baseball Players
author_facet	Enishi, Tetsuya Matsuura, Tetsuya Suzue, Naoto Takahashi, Yoshinori Sairyo, Koichi
author_sort	Enishi, Tetsuya
title	Cartilage Degeneration at Symptomatic Persistent Olecranon Physis in Adolescent Baseball Players
title_short	Cartilage Degeneration at Symptomatic Persistent Olecranon Physis in Adolescent Baseball Players
title_full	Cartilage Degeneration at Symptomatic Persistent Olecranon Physis in Adolescent Baseball Players
title_fullStr	Cartilage Degeneration at Symptomatic Persistent Olecranon Physis in Adolescent Baseball Players
title_full_unstemmed	Cartilage Degeneration at Symptomatic Persistent Olecranon Physis in Adolescent Baseball Players
title_sort	cartilage degeneration at symptomatic persistent olecranon physis in adolescent baseball players
description	Background. Elbow overuse injuries are common in adolescent baseball players, but symptomatic persistent olecranon physis is rare, and its pathogenesis remains unclear. Purpose. To examine the histopathological and imaging findings of advanced persistent olecranon physis. Methods. The olecranon physes of 2 baseball pitchers, aged 14 and 15 years, were examined by preoperative magnetic resonance imaging (MRI), and surgical specimens were examined histologically. Results. T2-weighted MRI revealed alterations in the intrachondral signal intensity possibly related to collagen degeneration and increased free water content. Histological findings of specimens stained with hematoxylin-eosin showed complete disorganization of the cartilage structure, hypocellularity, chondrocyte cluster formation, and moderately reduced staining. All these findings are hallmarks of osteoarthritis and are suggestive of cartilage degeneration. Conclusion. Growth plate degeneration was evident in advanced cases of symptomatic persistent olecranon physis. These findings contribute to understanding the pathogenesis of this disease.
publisher	Hindawi Publishing Corporation
publishDate	2014
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4281472/
_version_	1613172435980386304

Cartilage Degeneration at Symptomatic Persistent Olecranon Physis in Adolescent Baseball Players

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