Viscosupplementation is a procedure in which hyaluronic acid, a gelatinous fluid, is injected into the knee at the joint, according to OrthoInfo. Viscosupplementation is a treatment option sometimes recommended for those with osteoarthritis, especially when patients have not responded to other nonsurgical options.
Many people suffering from osteoarthritis have a deficiency of natural hyaluronic acid in their knees, so viscosupplementation may provide some relief from joint pain, OrthoInfo reports. Patients receiving these injections may not feel immediate relief, but viscosupplementation can provide long-term pain relief after continued treatment. While the procedure can alleviate pain associated with osteoarthritis, it cannot reverse the effects of the condition or regenerate knee cartilage.