Sometimes called wear and tear arthritis, osteoarthritis (OA) is the most common type of arthritis.
When the smooth cushion between bones (cartilage) breaks down, joints can get painful, swollen and hard to move.
OA can affect any joint, but it occurs most often in hands, knees, hips, lower back and neck.
OA can happen at any age, but it commonly starts in the 50s and affects women more than men.
This disease starts gradually and worsens over time.
But there are ways to manage OA to prevent or minimize pain and keep mobile. Some people never develop OA.