Osteoarthritis is the most common form of arthritis. It's a chronic joint disease that breaks down cartilage and bones in the neck, lower back, knees, hips, shoulders and/or fingers. Common symptoms are pain, stiffness and limited joint movement. Both rheumatoid arthritis and osteoarthritis cause joint pain, stiffness and limited range of motion, but the two diseases are distinct in their root cause and treatment. Osteoarthritis is not an autoimmune disease.  In a healthy joint, cartilage provides cushioning and a smooth joint surface for motion; in an osteoarthritic joint, as cartilage is irreversibly destroyed and bone abnormalities develop, movement becomes painful and more difficult. The knee is the largest joint in the body and bears most of our body’s weight. Due to the natural wear-and-tear that comes with constant lifting and moving, the knee is frequently affected by arthritis.

The following are common symptoms of knee osteoarthritis: - Pain with activity, Limitations in range of motion, Stiffness, Swelling, Tenderness, Grinding or crunching sensation

Arthritic knees can come in pairs, but it’s more common to develop osteoarthritis in one knee, as people may favor one leg over the other while walking or running.