K Y Liquid Personal Water Based Lubricant Review 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, Natural Lube: Products and DIYs to Try, Ingredients to Avoid, More Knee Viscosupplementation Complete Orthopedics & Podiatry Corticosteroid vs. Gel Injections for Joint Pain Which is right ? City Orthopaedics & Sports Medicine: Shoulder, Knee, & Hip Surgeon Arthrosamid vs. Gel Injections for Knee Pain: What US Patients Should Know Joint Relief Institute