Durolane is a single injection treatment to relive the pain of osteoarthritis in the joints. Durolane treatments is based upon a natural, safe and proven technology called NASHA. Durolane is a transparent gel, the gel contains a high level of hyaluronic acid. Hyaluronic acid is a naturally occurring molecule that provides lubrication and cushioning in a normal and healthy joint. When injected into joints affected by osteoarthritis its gives an immediate pain relief, while improving the joint function.