Knee Injections: Your Path to Pain Free Mobility Peter Howard Forget Ibuprofen This Oil Repairs Knee Joints Naturally Promoting Synovial Fluid Production for Better Joint Health Knee Gel Injections (Viscosupplementation): Uses & Side Effects 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