One of the most common joints to cause pain as we age is the knee and wrist. Wear and tear on this joint over time causes erosion of cartilage and development spicules bone called osteophytes. These osteophytes causes a sand paper type substance in the joint that with movement causes pain. Reestablishing a less abrasive contact in this joint is often accomplished with the injection of sodium hyaluronate. Typically the treatment of sodium hyaluronate consists of three injections over three weeks.This is treatment is reserved for those patients that have failed conventional pain medicines.