Progressive enlargement of thoracic ossification of the ligamentum flavum in professional baseball pitchers: a report of two cases

Both systemic and local factors might influence the development of ossification of the ligamentum flavum (OLF); however, whether specific physical activities play a role in the development of OLF remains unclear. This report presents two cases of thoracic radiculopathy owing to progressive enlargeme...

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Autores principales:	Kinshi Kato, Kenichi Otoshi, Michiyuki Hakozaki, Shin-ichi Konno
Formato:	article
Lenguaje:	EN
Publicado:	SAGE Publishing 2021
Materias:	Medicine (General) R5-920
Acceso en línea:	https://doaj.org/article/4197de7a58fe4f50a5de03c50d20001f
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spelling	oai:doaj.org-article:4197de7a58fe4f50a5de03c50d20001f2021-11-20T01:03:25ZProgressive enlargement of thoracic ossification of the ligamentum flavum in professional baseball pitchers: a report of two cases1473-230010.1177/03000605211059465https://doaj.org/article/4197de7a58fe4f50a5de03c50d20001f2021-11-01T00:00:00Zhttps://doi.org/10.1177/03000605211059465https://doaj.org/toc/1473-2300Both systemic and local factors might influence the development of ossification of the ligamentum flavum (OLF); however, whether specific physical activities play a role in the development of OLF remains unclear. This report presents two cases of thoracic radiculopathy owing to progressive enlargement of thoracic OLF within a few years in Japanese professional baseball pitchers. Two left-handed, Japanese, professional baseball pitchers in their 20s experienced thoracic radiating pain. Mild hypesthesia of the lower thoracic vertebral levels was observed, and an increase in the size of the OLF within a few years was identified in the lower thoracic spine using computed tomography and magnetic resonance imaging. Neither patient exhibited myelopathy and were, therefore, treated conservatively. Both patients were able to return to playing in top condition within 4 months after onset. The findings in these cases suggest that thoracic OLF might increase in size and become exacerbated in certain individuals, such as professional pitchers, who experience repeated, localized, mechanical stress on the thoracic spine, irrespective of age.Kinshi KatoKenichi OtoshiMichiyuki HakozakiShin-ichi KonnoSAGE PublishingarticleMedicine (General)R5-920ENJournal of International Medical Research, Vol 49 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine (General) R5-920
spellingShingle	Medicine (General) R5-920 Kinshi Kato Kenichi Otoshi Michiyuki Hakozaki Shin-ichi Konno Progressive enlargement of thoracic ossification of the ligamentum flavum in professional baseball pitchers: a report of two cases
description	Both systemic and local factors might influence the development of ossification of the ligamentum flavum (OLF); however, whether specific physical activities play a role in the development of OLF remains unclear. This report presents two cases of thoracic radiculopathy owing to progressive enlargement of thoracic OLF within a few years in Japanese professional baseball pitchers. Two left-handed, Japanese, professional baseball pitchers in their 20s experienced thoracic radiating pain. Mild hypesthesia of the lower thoracic vertebral levels was observed, and an increase in the size of the OLF within a few years was identified in the lower thoracic spine using computed tomography and magnetic resonance imaging. Neither patient exhibited myelopathy and were, therefore, treated conservatively. Both patients were able to return to playing in top condition within 4 months after onset. The findings in these cases suggest that thoracic OLF might increase in size and become exacerbated in certain individuals, such as professional pitchers, who experience repeated, localized, mechanical stress on the thoracic spine, irrespective of age.
format	article
author	Kinshi Kato Kenichi Otoshi Michiyuki Hakozaki Shin-ichi Konno
author_facet	Kinshi Kato Kenichi Otoshi Michiyuki Hakozaki Shin-ichi Konno
author_sort	Kinshi Kato
title	Progressive enlargement of thoracic ossification of the ligamentum flavum in professional baseball pitchers: a report of two cases
title_short	Progressive enlargement of thoracic ossification of the ligamentum flavum in professional baseball pitchers: a report of two cases
title_full	Progressive enlargement of thoracic ossification of the ligamentum flavum in professional baseball pitchers: a report of two cases
title_fullStr	Progressive enlargement of thoracic ossification of the ligamentum flavum in professional baseball pitchers: a report of two cases
title_full_unstemmed	Progressive enlargement of thoracic ossification of the ligamentum flavum in professional baseball pitchers: a report of two cases
title_sort	progressive enlargement of thoracic ossification of the ligamentum flavum in professional baseball pitchers: a report of two cases
publisher	SAGE Publishing
publishDate	2021
url	https://doaj.org/article/4197de7a58fe4f50a5de03c50d20001f
work_keys_str_mv	AT kinshikato progressiveenlargementofthoracicossificationoftheligamentumflavuminprofessionalbaseballpitchersareportoftwocases AT kenichiotoshi progressiveenlargementofthoracicossificationoftheligamentumflavuminprofessionalbaseballpitchersareportoftwocases AT michiyukihakozaki progressiveenlargementofthoracicossificationoftheligamentumflavuminprofessionalbaseballpitchersareportoftwocases AT shinichikonno progressiveenlargementofthoracicossificationoftheligamentumflavuminprofessionalbaseballpitchersareportoftwocases
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Progressive enlargement of thoracic ossification of the ligamentum flavum in professional baseball pitchers: a report of two cases

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