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 Can Exercise Make Knee Arthritis Pain Better or Worse? Total Ortho Sports Medicine Viscosupplementation: How Gel Injections Restore Your Knee's Natural Cushioning Joint Relief Institute How Can I Naturally Lubricate My Joints? Wellgard Diagram of the presence of lubricin in the SF of the healthy knee joint Download Scientific Diagram How to Lubricate Stiff Joints: Unlocking the Secrets to Pain Free Move physioflexpro