著者

橋口 宏 江川 慶長 伊藤 博元

出版者

日本肩関節学会

雑誌

肩関節 (ISSN:09104461)

巻号頁・発行日

vol.30, no.3, pp.485-488, 2006-08-18 (Released:2012-11-20)

参考文献数

5

被引用文献数

3

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The purpose of this study was to analyze factors that influence the outcome of nonsurgical treatment for partial-thickness rotator cuff tears (PTRCTs). Sixty-one patients with PTRCT included 34 women and 27 men with a mean age of 55.7 years old were evaluated.43 patients had a history of trauma such as a fall or traffic accident. The types of PTRCT were revealed by MRI. A bursal-sided tear of the cuff was observed in 32patients, a joint-sided tear in 20 and an intratendinous tear in 9. All the patients were treated nonsurgically for a mean duration of 5.7 months. Satisfactory results were achieved in 28 patients.33 patients with unsatisfactory results eventually required surgery. Factors of the 33 nonresponsive patients to the 28 responsive patients to treatment were compared. The factors were as follows; characteristics of the patients, range and strength of the shoulder motion, and radiographic factors, such as size of the subacromial spur and acromial morphology. All data were statistically evaluated using a logistic analysis. The significance level was set at P < 0.05, and odds ratios were figured. Identified factors that had a significant difference between the two groups were age, size of the subacromial spur, bursal side tear, and range of forward elevation (FE) and external rotation (ER). Positive correlation was demonstrated in age and range of the motions, and negative correlation in size of the spur. Each ratio of age, size of the spur, bursal. side tear, FE and ER was 3.33, 2.55, 33.33, 1.1 and 1.11respectively. This study suggested that the younger the age, a bursal-sided tear, a large subacromial spur and motion restriction of the shoulder are factors that induce a poor outcome of nonsurgical treatment for PTRCTs.