Lim TK, Bae KH, Choi YS, et al. - Researchers assumed that clinical outcome and retear rate would improve over time with the accumulation of a surgeon’s experience. A retrospective study was performed to include a total of 200 consecutive patients who had arthroscopic rotator cuff repairs, conducted by single surgeon between 2011 and 2018. They enrolled symptomatic rotator cuff tears involving the supraspinatus/infraspinatus and/or subscapularis tendon and follow-up MRI assessments of repair integrity 6 months after surgery. The results of this study demonstrated that the clinical outcomes and retear rate after arthroscopic rotator cuff repairs significantly improved during the learning curve period of beginner shoulder surgeon.