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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.
Osteoarthrosis. Osteoarthrosis (also known as Osteoarthritis) is a Degenerative Bone Disease and is an excruciatingly painful condition that is caused by a gradual loss of cartilage. Symptoms develop slowly and worsen over time until you are barely able to perform routine activities. 1  Pain, aching, and stiffness of the joints. 2  Muscle weakness. 3  Swelling and tenderness of the joints. 4  Deformed joints.