Final answer:
Osteoarthritis is indeed most commonly caused by the wear and tear of joints, particularly due to aging, injuries, and obesity. There is no cure, but treatments aim to alleviate pain and improve quality of life.
Step-by-step explanation:
Osteoarthritis (OA) is indeed most commonly caused by the wear and tear of life, confirming that the statement the student asked about is true. This joint disorder results from the breakdown of joint cartilage and bone, most often due to prolonged stress on joints, which is exacerbated by factors such as aging, joint injuries, and obesity. The degradation of the articular cartilage leads to joint stiffness and pain, with typical symptoms often worsening following exercise and physical activity. While there is no cure for osteoarthritis, treatments focus on alleviating pain through lifestyle changes, medication, and in severe cases, joint replacement surgery may be required.