著者

立入 久和 森原 徹 仲川 春彦 木田 圭重 祐成 毅 堀井 基行 久保 俊一 三浦 雄一郎 福島 秀晃 黒川 正夫

出版者

日本肩関節学会

雑誌

肩関節 (ISSN:09104461)

巻号頁・発行日

vol.35, no.3, pp.719-722, 2011 (Released:2011-12-21)

参考文献数

9

被引用文献数

3

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Shrug exercise, which is one of the treatments for stiff shoulder and rotator cuff tear, is commonly performed. This exercise is also performed to relax the shoulder after surgery for rotator cuff repair. The effectiveness of shrug exercise for the rotator cuff has not been analyzed. The purpose of this study was to analyze the shrug exercise and to evaluate the usefulness of the shrug. Five asymptomatic male volunteers who had no history of shoulder abnormalities were examined. SSP (supraspinatus) muscle was measured by fine-wire electrodes and ISP (infraspinatus) muscle was measured by surface electrodes. At the time of non-shrug (group N) and shrug (group S), %MVC (maximal voluntary contraction) was calculated in the position of 0, 30, 60, 90 degrees flexion. %MVC of SSP in the position of 0,30,60,90 degrees flexion were 2,8,13,15% in group N, and 32,35,23,32% in group S. %MVC of SSP were increased at each angle. %MVC of ISP were 6,16,25,38% in group N, and 10,17,25,42% in group S. It has been reported that %MVC over 20% is high activity. %MVC of SSP showed over 20% at shrug position in this study, which was considered that shrug motion caused eccentric contraction of SSP muscle with the scapula elevating. From this study, it is considered that shrug excise is useful for cuff training, but may be overloaded on SSP in the early stage after surgery.

著者

南 昌孝 森原 徹 大西 興洋 加太 佑吉 祐成 毅 古川 龍平 木田 圭重 琴浦 義浩 藤原 浩芳 久保 俊一

出版者

日本肩関節学会

雑誌

肩関節 (ISSN:09104461)

巻号頁・発行日

vol.41, no.2, pp.541-544, 2017 (Released:2017-09-20)

参考文献数

8

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胸郭出口症候群(TOS)は,上肢のしびれや放散痛が生じる疾患である.投球時に同様の症状を訴える野球選手をしばしば経験するが,その疫学や病態は明らかでない.高校野球検診でTOSと診断された選手の疫学と病態を検討した.検診に参加した選手のうち,投球時に上肢のしびれや放散痛を自覚しWright testが陽性の選手をTOSの疑いありとした.そのうち病院を受診した選手の病態を検討した.TOSを疑われた選手は305名中13名であり,5名が病院を受診した.5名の身体所見は,肩甲骨の運動不良3例,胸椎のアライメント不良3例であった.すべての選手に運動療法を行い,2ヵ月以内に症状は消失した.野球選手のTOSは,筋の過緊張やリリース時の牽引などが原因とされている.今回経験した5例では筋の過緊張や肩甲骨下方偏位に加え,胸椎のアライメント異常が影響していると考えた.それらを改善することで症状は消失した.