鏡視下腱板修復術の術後MRI所見の推移と短期成績の検討

概要

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The aim of this study was to report the change in post-operative MRI images and the clinical outcome of arthroscopic rotator cuff repair (ARCR). We have treated patients of rotator cuff tear with ARCR since 2002. In this study, we examined 41 cases of patients with rotator cuff tear which were treated with ARCR and performed post-operative MRI at 3, 6 and 12 months. The average age was 66.0 years old, and the cases consisted of 22 males and 19 females, 35 right side and 6 left side tears. Clinical results were evaluated with JOA scores. MRI were classified according to Sugayas Classification. JOA score were significantly improved from 61.0 to 90.9 after 12 months after surgery. They sorted into 3 groups using MRI classification, type 1+2 were good repair and type 3 was incomplete repair and type 4+5 were retear. The average postoperative JOA score was 94.2 in type 1+2, 91.2 in type 3, 84.2 in type 4+5, and type4+5 were significantly disadvantaged compared with type1+2 group. The cases that MRI changed for the worse in the 12 month were 3 of the 24 cases of type 1+2 at the 3 month. In 21 cases of type 1+2 at the 6 month MRI did not change worse in the 12 month except for one case. In both cases of type 3 at the 6 month and cases at 12 month MRI did not change in the 12 month. Postoperative therapy should be provided carefully until 6 months after surgery.