Knee Viscosupplementation Complete Orthopedics & Podiatry Hyaluronic Acid Injections for Knee Osteoarthritis: What to Expect: Cascade Orthopedics & Sports Medicine Center, P.C.: Orthopedic Surgery Natural Release Muscle GEL Four Oaks Farm Products How GELSYN 3 works Bioventus OA Knee Pain Relief Are Knee Injections Right for Me? Palmetto Bone and Joint A gel injection for the knee is often used when the joint loses some of its natural lubrication, which can happen with arthritis or cartilage wear., The gel acts as a lubricant and shock absorber