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Osteoarthritis is a joint disease that mostly affects cartilage. Cartilage is the slippery tissue that covers the ends of bones in a joint. Healthy cartilage allows bones to glide over each other. It also helps absorb shock of movement.
There is no specific treatment that can stop the progressive degeneration of cartilage from osteoarthritis. However, joint function can be improved by many therapies, including physical therapy that is designed to increase flexibility and strengthen muscle power.