Which condition has received FDA approval for intraarticular injection of hyaluronic acid as treatment?

The condition that has received FDA approval for intraarticular injection of hyaluronic acid as treatment is osteoarthritis of the knee. Hyaluronic acid is a naturally occurring substance in the synovial fluid of joints and is used to help lubricate and cushion the joint. In patients with osteoarthritis, the viscoelastic properties of synovial fluid are often compromised, leading to pain and reduced function. Intraarticular injections of hyaluronic acid can provide relief from pain and improve joint function by supplementing the natural fluid and addressing the symptoms of osteoarthritis.

This treatment is specifically indicated for knee osteoarthritis due to the widespread clinical evidence supporting its efficacy and safety in this condition as recognized by the FDA. Other conditions listed, such as rheumatoid arthritis, olecranon bursitis, and gouty arthritis, are generally managed through different therapies that focus more on anti-inflammatory agents or disease-modifying treatments rather than hyaluronic acid injections.