Intra-articular Injection of Platelet-Rich Plasma Is Superior to Hyaluronic Acid or Saline Solution in the Treatment of Mild to Moderate Knee Osteoarthritis Leave a Comment / Cartilage regeneration, Platelet Rich Plasma, Regenerative Urology / January 23, 2020 October 7, 2020 You will have to log in or register to view this content.