Platelet-Rich Plasma Provides Greater Pain Relief and Functional Improvement Than Hyaluronic Acid for Knee Osteoarthritis: A Systematic Review and Meta-analysis of Randomized Controlled Trials.
IMPORTANCE Knee osteoarthritis is among the leading causes of pain-related disability in adults, and intra-articular injection occupies an established niche between conservative management and arthroplasty. Platelet-rich plasma (PRP) and hyaluronic acid (HA) are both in widespread clinical use, yet which agent should b...