鏡視下Bankart修復術の成績−single row法とdual row法の比較−

概要

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The purpose of this study was to evaluate the minimum 2-year-follow-up result of arthroscopic Bankart repair using suture anchor for traumatic anterior glenohumeral instability and to make a comparison of the results between the conventional single row method (SR) and the dual row method (DR). 71 shoulders underwent SR (group SR), and 60 shoulders underwent DR (group DR). Postoperative recurrence rate was 12.6% in group SR and 3.3% in group DR. The difference was significant. At the time of the final follow-up, the average loss of external rotation was 7.8° in group SR and 9.7° in group DR with the arm at the side, and 5.4° in group SR and 9.2° in group DR with the arm in 90° of abduction. The difference in the loss of external rotation with the arm at 90° of abduction was significant. The averaged Japanese Shoulder Society shoulder instability score (JSS-IS score) changed from 49.4 before surgery to 92.3 after surgery in group SR, and from 47.6 before surgery to 94.7 after surgery in group DR. The rate of complete return to sports activity was 73.4% in group SR and 76.6% in group DR. No significant differences were observed in the JSS-SI score and rate of complete return to sports activity at the time of the final follow-up between group SR and DR. This study suggested that DR was a reliable procedure to gain a lower recurrence rate, while it produced greater motion loss of external rotation than SR.