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, Knee Osteoarthritis: Early Signs, Causes, Diagnosis, Treatment Joint fluid fills the small space between the ends of bones and acts like a natural lubricant. The synovial membrane creates this thick, silky fluid using long molecules that hold water and give it a Promoting Synovial Fluid Production for Better Joint Health Knee Gel Injections (Viscosupplementation): Uses & Side Effects Gel Knee Injections for Pain Relief What to Expect Oak Brook Medical