It is important to understand the nature of knee osteoarthritis. This condition occurs when the cartilage covering the joint surfaces begins to wear down. As a result, the joint surfaces become uneven and rough, leading to increased friction and reduced shock absorption. The natural synovial fluid, which helps lubricate and cushion the knee, becomes thinner and less effective, causing pain, stiffness, and reduced mobility.
Do You Have These Symptoms?
- Knee pain that worsens with movement
- Difficulty bending, standing, or climbing stairs
- Grinding or clicking sounds when moving the knee
- Bowed knees or difficulty walking
- Stiffness or inability to fully bend or straighten the knee
Many elderly patients delay treatment due to fear of surgery or concern that life after surgery may be restricted. However, not all knee osteoarthritis cases require joint replacement surgery. If diagnosed early, there are non-surgical treatment options, including viscosupplementation—an injection of synthetic synovial fluid.
What Is Viscosupplementation?
Viscosupplementation is a treatment involving the injection of Hyaluronic Acid (HA) directly into the knee joint. HA is a natural substance found in healthy joints that:
- Lubricates joint surfaces
- Absorbs impact forces
- Supports smooth, pain-free movement
In osteoarthritic knees, the quantity and quality of HA are reduced. Injecting HA helps restore joint lubrication, reduce friction and inflammation, and stimulate the production of natural synovial fluid by the joint lining.
Benefits of Hyaluronic Acid Injections
Research and clinical experience have shown that HA injections can:
- Effectively relieve pain
- Reduce stiffness and improve joint function
- Delay disease progression when administered in early to moderate stages
- Improve quality of life and activity levels
Who is suitable for this Treatment?
- Patients with mild to moderate knee osteoarthritis
- Patients who have not responded well to oral pain medications or physical therapy
- Patients who are not suitable candidates for joint replacement surgery
In Thailand and globally, various types of HA injections are available, classified by their molecular weight. Some modern formulations require only a single injection, offering convenience and long-lasting pain relief—typically for 6 to 12 months, depending on individual response.
Viscosupplementation is a safe, non-surgical treatment option for knee osteoarthritis that can help restore joint comfort and mobility. It is especially beneficial when used early in the course of the disease. If you are experiencing knee pain or stiffness, consult your orthopedic specialist to determine whether this treatment is appropriate for you.
