5 Ways to Increase Synovial Fluid wikiHow The Science Behind Knee Gel Injections: How Synovial Fluid Supplements Relieve Osteoarthritis Pain AMSK Clinic 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 Diagram of the presence of lubricin in the SF of the healthy knee joint Download Scientific Diagram Natural Knee Lubrication for Healthy Cartilage and Joint Comfort London Cartilage Clinic