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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.
Cartilage is a buffer of sorts that lets your joints move smoothly. When cartilage begins to break down, your bones end up rubbing together when you move. The friction causes inflammation, pain, stiffness, and other uncomfortable symptoms. Many of the causes of osteoarthritis are out of your control. However, there are some lifestyle factors that you can change, if needed, to reduce your risk of developing OA.