Main causes of bone wear
Age-related changes: As we age, cartilage becomes less strong and less able to repair itself. This is most common in people over the age of 50.
Obesity: Being overweight puts a lot of pressure on weight-bearing joints such as the knees and hips. This accelerates the wear of cartilage.
Previous Injuries: Previous injuries to joints (accidents, strenuous exercise with reduced fitness) can cause wear and tear on those joints later.
Genetics: If your parents or siblings have this problem in your family, you are more likely to develop it.
Overuse: Wear and tear can occur earlier in people who work hard on the same joints over and over again (for example, those who sit for long periods of time).
Muscle weakness: Weakness in the muscles that support the joints increases stress on the joints.
Other rheumatic diseases: Rheumatoid arthritis, if left untreated for a long time, can lead to wear and tear on the joints.
