Sodium hyaluronate is similar to the synovial (sin-OH-vee-ul) fluid that surrounds your
joints. Synovial fluid acts as a lubricant and shock absorber.
Sodium hyaluronate is injected into the knee joint to treat pain caused by osteoarthritis.
This medication is usually reserved for people whose pain has not been relieved by using other
medicines or treatments.
Sodium hyaluronate may also be used for purposes other than those listed in this
medication guide.