反復性肩関節脱臼に対する鏡視下 Bankart 修復術後成績の統計学的解析

抄録

Arthroscopic Bankart repair is commonly used for treatment of recurrent shoulder dislocation. However it is difficult to detect before surgery what factors affect the outcome of arthroscopic Bankart repair. The aim of this study is to investigate the clinical factors which are related to the outcome of arthroscopic Bankart repair in our institute. We tried to assess the outcome of arthroscopic Bankart repair in our institute in 27 shoulders in 25 patients (17 males and 8 females) with an average age of 37.3 years old and an average follow-up period of 2.4 years by using multiple regression analysis in JSS score before and after surgery. JSS scores changed from an average of 54 before surgery to an average of 91 after surgery. Rowe score was changed from an average of 40 before surgery to an average of 91 after surgery. We performed arthroscopic Bankart repair by 2 portals in 14 shoulders that had excellent result as well. One out of 27 shoulders showed redislocation of a skier (redislocation rate was 3.7%). There was a significant relationship between JSS score before surgery and XP finding after surgery (r=0.738), XP finding and instability before surgery (r=0.474), JSS score before surgery and function after surgery (r=0.421) respectively. Range of motion (P=0.003), function (P=0.018) and pain (P=0.043) related to JSS score after surgery. JSS score before surgery related to function (P=0.004) and XP finding (P=0.001) after surgery. Therefore ROM before surgery is an important factor to predict the outcome of arthroscopic Bankart repair.