Lee S, Hwang JT, Lee SS, et al. - This study was undertaken to investigate the association between cutting-through at the greater tuberosity (GT) in arthroscopic suture-bridge rotator cuff repair and the bone mineral density (BMD) of the lumbar spine, hip, and ipsilateral GT of the proximal humerus and to evaluate factors and clinical outcomes related to cutting-through. This study was carried out to include patients who had undergone arthroscopic knotted suture-bridge rotator cuff repair for full-thickness rotator cuff tears between June 2014-October 2015 and who had undergone dual-energy x-ray absorptiometry (DEXA) scans within 1 month before surgery with a minimum 2-year follow-up. They examined clinical and radiological data. Factors related to cutting-through were assessed by performing univariate and regression analyses. They examined a sum of 78 patients. Individuals were classified into two groups: patients who had cutting-through (46, group I) and patients who did not (32, group II). The data exhibited that GT BMD and rotator cuff tear size are independent factors correlated with cutting-through at the GT. A DEXA scan of the proximal humerus was found to be beneficial for predicting bone quality before arthroscopic suture-bridge rotator cuff repair.