Gwark JY, et al. - Authors compared the structural and clinical outcomes after arthroscopic rotator cuff repair (ARCR) of a case group aged 70 and above with those of a control group younger than 70, with the 2 groups matched for sex and tear size. Findings suggested comparable clinical and structural outcomes of ARCR in patients 70 or older with symptomatic full-thickness rotator cuff tear with those in patients younger than 70 with at least 1-year follow-up. A strong predictor for retear was preoperative tear size, a biological factor.