Hyaluronan or hyaluronic acid is a thick fluid injected to cushion hyaluronic injections for arthritis knee joint after cartilage breaks down. Osteoarthritis is a degenerative joint disease which primarily affects cartilage. The ends of the two bones in a normal joint are covered with cartilage, allowing the bones to glide over one another.
Cartilage also serves as a shock absorber. Pain, stiffness, and limited range of motion for the affected joint are the result of the deterioration. The treatment which injects hyaluronan into the knee, known as viscosupplementation, is an effort to improve the lubrication of the knee, reduce pain, and improve range of motion. Here are 10 things you should know about hyaluronan injections.
1 — There are currently five hyaluronates approved by the U. Hyaluronan injections are considered treatments or therapies rather than drugs. Viscosupplementation for osteoarthritis has been studied since the 1970s. In 1997, the first two hyaluronates were approved by the FDA and three more have since been FDA-approved.
2 — Hyaluronan is usually not a first line treatment for knee osteoarthritis. 3 — The treatment course for the five types of hyaluronan injections varies. Euflexxa requires three separate knee injections given one week apart. Both Hyalgan and Supartz require five separate injections given one week apart.