Snow M, Hussain F, Pagkalos J, et al. - A randomized double-blind controlled trial was designed to evaluate the impact of the delayed application of leukocyte-rich platelet-rich plasma (PRP) on rotator cuff repair results as assessed by outcome scores and imaging at one year. Researchers randomized a sum of 97 individuals to ultrasound-guided injection of leukocyte-rich PRP or normal saline between 10 and 14 days postsurgery. At 1 year, a sum of 87 individuals completed a clinical evaluation and underwent magnetic resonance imaging. The American Shoulder and elbow score, constant score, western Ontario rotator cuff index, and the disabilities of the arm, shoulder and hand score were the outcome scores. It was indicated that the delayed application of PRP post rotator cuff repair did not increase function as estimated by patient-reported outcome measures and Constant score at 1 year postoperatively.