The Science Behind Knee Gel Injections: How Synovial Fluid Supplements Relieve Osteoarthritis Pain AMSK Clinic 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 Types of Viscosupplementation Injections SNS Rheumatology Hyaluronic Acid Injections Desert Sky Medicine Hyaluronic Acid Injections for Joint Pain Relief How Do Cartilage Lubrication Mechanisms Fail in Osteoarthritis? A Comprehensive Review