92 patients undergoing shoulder arthroscopy repair for rotator cuff tears were randomized to receive either hyaluronic acid plus platelet-rich plasma (HA + PRP; n=46) or hyaluronic acid alone (HA; n=46). Outcomes of interest included pain on a Visual Analog Scale (VAS), Constant-Murley Score (CMS), the University of California-Los Angeles (UCLA) shoulder score, the American Shoulder & Elbow Surgeo...