Effect of PRP vs Corticosteroid in Rotator Cuff Tendinopathy Subtypes in Arthroscopic Repair

Platelet rich plasma group: after the surgery of rotator arthroscopic rotator cuff repair, 3ml PRP (LongTai Biological Company) was injected into the rotator cuff tear under the rotator arthroscope for a time. PRP production process: before anesthesia, 20ml arterial blood was drawn and injected into the PRP tube. The blood was fully oscillated in the tube, and then placed in a centrifuge with 1500g for 9min to remove excess plasma and make 5ml PRP. 3ml is used for injection and 2ml is used for quality control.

Corticosteroid group: after the surgery of rotator cuff repair under arthroscopy, 1mL prednisone (MSD) + 2mL sodium hyaluronate (biochemical Industry Co., Ltd.) was injected under arthroscopy.

Normal saline