Hyaluronic Acid is a naturally occurring substance in the human body. It is found in high concentration within all healthy joints. It forms part of the synovial fluid. It lubricates, acts as a shock absorber, filters inflammatory molecules, blocks pain receptors and facilitates nutrition of joints.
As we get older, the concentration and quality of the Hyaluronic Acid within joints diminishes. It becomes more watery and less effective at protecting the joint. It is thought that this is a contributory factor in the development of joint pain and stiffness associated with arthritis. Hyaluronic Acid can be produced synthetically and injected into arthritic joints to reduce pain and stiffness. As well as the immediate boost in the concentration of good quality Hyaluronic Acid following the injection, the injection also stimulates the joint to start producing more good quality Hyaluronic Acid of its own.