What are the causes of osteoarthritis?

[KeithD]

There are several factors that may contribute to the development of osteoarthritis, including:

1. Aging: As people grow older, the natural wear and tear on joints can lead to osteoarthritis.
   
2. Genetics: Certain genetic factors may make a person more susceptible to developing osteoarthritis.
   
3. Joint injury: Previous injury to a joint, such as a broken bone or ligament tear, may increase the risk of developing osteoarthritis.
   
4. Obesity: Excessive weight puts extra pressure on weight-bearing joints, such as the hips and knees, which can lead to osteoarthritis.
   
5. Overuse: Repetitive stress on a joint, such as from a physically demanding job or sports, can increase the risk of developing osteoarthritis.
   
6. Other medical conditions: Certain medical conditions, such as rheumatoid arthritis, can increase the risk of developing osteoarthritis.