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 Hyaluronic Gel Injections Twin Cities Pain Clinic Bye Bye Knee Pain, Hello Relief! Struggling with knee pain? At Sheriff Medical Centre, we offer Hyaluronic Acid Treatment, a natural lubricant that cushions your joints, reduces pain, and restores mobility. How to keep joints lubricated Baptist Health Jacksonville, FL A gel injection for the knee is often used when the joint loses some of its natural lubrication, which can happen with arthritis or cartilage wear., The gel acts as a lubricant and shock absorber