Finding out the cause of arthritis in an individual could be a difficult task as the causes of arthritis may vary from individual to individual.Some common causes of arthritis are age, genetics or a previous injury. Excess body weight can also be a cause of arthritis, especially in case of knees and hips. Peculiar demands of some professions can also be a cause of arthritis like workers standing besides an assembly line or those carrying heavy load.

In some cases it is seen that an illness or an infection also caused arthritis. Some high level sports are also thought to behind arthritis but the benefits of the physical activity prevail over any risk of arthritis.