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 How Hyaluronic Acid Injections Alleviate Arthritic Knee Pain The Spine and Sports Center Home Remedies for Knee Pain: Causes, Relief & When to See a Doctor Max Hospital The Science Behind Knee Gel Injections: How Synovial Fluid Supplements Relieve Osteoarthritis Pain AMSK Clinic