How to relieve knee pain? A knee gel injection helps improve lubrication and cushioning inside the joint when natural joint fluid becomes less effective over time This is commonly used for patients Manage your Knee Osteoarthritis without Surgery! MT Physio The Lubricen knee patch is delivering the drug free ingredients which stimulate the body into producing synovial fluid the body's natural lubricant that protects the knee joint cartilage. InTouch Rugby (AXIOS) Platelet Rich Plasma for Knee Osteoarthritis: When it works, when it does not work Knee Grease Capsules for Regenerating Synovial Fluid in Knee Joints