拘縮を伴った腱板断裂例における肩甲骨周囲筋活動量の検討
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概要
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<B>Background:</B> The purpose of this study was to evaluate surface EMG activity of scapular muscle in rotator cuff tear with shoulder joint stiffness.<BR><B>Methods:</B> 15 patients with rotator cuff tear were the subjects of this study (RCT group). These patients were divided into stiffness group (ST group) and no stiffness group (NST group). 10 patients with shoulder joint stiffness were classified to ST group and 5 patients without shoulder joint stiffness were classified to NST group. The control group (C group) consisted of 13 patients without any complaints and history of shoulder disorder. EMG data were collected from upper and lower trapezius muscle during humeral elevation in the scapular plane at 30, 60, 90 and 120 degrees. To assess factors relating to muscle activity of the upper and lower trapezius, factors such as age, type of tear and shoulder joint stiffness were evaluated. All data were evaluated statistically, and the significance level was set at less than 0.05.<BR><B>Results:</B> Upper trapezius muscle activities of RCT group were significantly greater than that of C group without at 30 degrees. Lower trapezius muscle activities of RCT group were significantly greater than that of C group at all degree. Upper and lower trapezius muscle activities of ST group were significantly greater than that of NST group at all degree.<BR><B>Conclusion:</B> Shoulder joint stiffness contributed to increase of upper and lower trapezius muscle activity. In conclusion, upper and lower trapezius muscle activity in rotator cuff tear, especially with shoulder joint stiffness increased.
- 日本肩関節学会の論文
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