osteoarthritis (degenerative joint disease) is a disease in which the joints are inflamed. pain and stiffness It usually affects the knees, hips, hands and spine. These joints are made up of cartilage. This is the structure that supports the point where the two bones meet. When osteoarthritis occurs The cartilage pillow loses its ability to support the joints and the bones rub against each other. severe rickets The cushion will completely deteriorate. Osteoarthritis cannot be cured. Regular weight and exercise may help slow the onset of the disease and improve flexibility. Avoid strenuous activities such as sports.