Knee Gel Injections (Viscosupplementation): Uses & Side Effects How Do Cartilage Lubrication Mechanisms Fail in Osteoarthritis? A Comprehensive Review A gel injection for the knee helps improve joint lubrication when natural synovial fluid becomes thinner or less effective, which often happens with arthritis. This gel acts as a cushion and lubricant An evidence based guide to knee pain, meniscus damage, cartilage damage, ACL and PCL injury and the best PRP injection for knee joint The Clifford Clinic Lubricating Injections Can Soothe Knee Osteoarthritis