Knee Gel Injections (Viscosupplementation): Uses & Side Effects Effective Knee Pain Remedies You Can Do at Home Knee Pain Treatments in San Antonio Solutions for Relief The Science Behind Knee Gel Injections: How Synovial Fluid Supplements Relieve Osteoarthritis Pain AMSK Clinic Gel injections (also called viscosupplementation) are used to treat joint pain from arthritis, especially in the knee. The gel acts as a lubricant and shock absorber inside the joint, helping reduce friction, Joint Lubrication Dr. Govind Baranwal