肩腱板断裂例における握力低下の意義

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There are some patients with rotator cuff tears whose grip strength is much smaller in the same side as the torn cuff than in the normal side. The purpose of this study was to investigate the significance of weakness of the grip strength in rotator cuff tears. The materials for this study were 22 patients who had a rotator cuff tear of the shoulder and were normal in the other shoulder. There were 14 males and 8 females with an average age of 58 years old. Isometric muscle strength around the shoulders was measured by using a MicroFET, and grip strength was done by using a dynamometer. The ratios of the muscle strength of the affected side to the one of the normal side were calculated. The materials were divided into two groups : Group A consisted of patients whose grip strength of the affected side were less than 80% of the normal side. Group B consisted of the other patients. Grip strength had a significant correlation with muscle strength of 45 degrees shoulder abduction and external rotation in the patients with rotator cuff tears. There were 9 patients in group A and 13 in group B. The ratios of the muscle strength of the affected side to the one of the normal side were as follows : 45 degrees abduction ; 0.259 in groupA, 0.559 in groupB (p=0.048), 90 degrees abduction ; 0.205 in groupA, 0.380 in groupB (p=0.158), external rotation ; 0.455 in group A, 0.731 in groupB (p=0.082). Weakness of grip strength in the cuff tear side indicated a greater loss of muscle strength of 45 degrees shoulder abduction.
日本肩関節学会の論文
2002-01-01

肩腱板断裂例における握力低下の意義

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