ノットレスアンカーを用いた鏡視下腱板縫合術の短期成績

抄録

The purpose of this study was to report on the minimum 6 month-results of arthroscopic repair of rotator cuff tears with Knotless anchors. Thirty-three shoulders arthroscopically treated with Knotless anchors were retrospectively evaluated. The average follow-up was 10.2 months, with a minimum of 6 months. This study group included 7 small tears (<1cm),21 medium-size tears (1 to 3 cm),4 large tears (3 to 5 cm) and 1 massive tear (> 5cm). Anchors were the primary method of arthroscopic fixation, with an average of 2.0 anchors per case. Additional side to side sutures were performed in 7 cases. The clinical results were evaluated using a Japanese Orthopaedic Association (JOA score), shoulder scoring system. Radiographic evaluation revealed early failures of Knotless anchors were pulled out in three cases at 4 weeks postoperatively. The JOA scores of the group without three failure cases increased from a preoperative average of 61.7 to a postoperative average of 82.3 at 3 months and 91.3 at 6 months respectively (P <0.05). Patients treated with arthroscopic rotator cuff repair with Knotless anchors showed excellent short-term clinical outcomes minimum 6 months after surgery. However, patients' selection was crucial to decrease the number of early Knotless anchor failures.