Osteoarthritis (OA) is a joint disease and the most common type of arthritis (inflammation of the joints) whose hallmark is cartilage degradation. It most commonly affects the joints of the hand, knee, hip, neck, and lower back.[1]
What is osteoarthritis?
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•Last Updated: May 16, 2025
Osteoarthritis is the most common type of arthritis and is characterized by joint disease and cartilage degradation. It primarily affects the joints in the hand, knee, hip, neck, and lower back.