What type of joint is mainly affected by osteoarthritis?

Osteoarthritis predominantly affects weight-bearing joints, which include areas such as the knees, hips, and spine. These joints are subject to significant mechanical stress throughout daily activities, which contributes to the wear and tear of cartilage over time. In osteoarthritis, the cartilage that cushions these joints deteriorates, leading to pain, stiffness, and decreased range of motion. This degenerative condition is often exacerbated by factors such as age, obesity, and previous injuries, making weight-bearing joints particularly vulnerable.

While hinge joints, ball and socket joints, and pivot joints can be affected by osteoarthritis, the emphasis on weight-bearing joints highlights the specific impact of the condition on areas of the musculoskeletal system that bear the most load. The resultant degeneration in these key joints is a characteristic feature of osteoarthritis, illustrating the condition's direct correlation with the function and wear of weight-bearing structures in the body.