Can you tell me more about hyaluronic acid, for treating arthritis and rebuilding cartilage?

See details. It does not rebuild cartilage but it can privide temporary relief in some patients with osteoarthritis of the knee. The benefit usually last about 6 months and the injections can be repeated as long as they help. The exact mechanism is unknown but the commonly held explanation that it works as a lubricant is not likely the correct answer.