Another way to treat your osteoarthritis (OA) knee pain right at the source. Hyaluronic acid is normally found within the synovial fluid in your joint. It is a thick viscous solution that lubricates and cushions the joint the injections are basically to help replenish the supply of hyaluran within the joint that decreases with the further advancement of arthritis. It can provide up to six months of knee pain relief. It is often used to help patients postpone total joint replacement

The side effects most commonly seen in a medical study were knee pain, stiffness and swelling or fluid buildup in or around the knee. Other side effects, such as rash, may also occur. Side effects were generally mild to moderate and did not last long.