What is the most common type of arthritis characterized by joint cartilage breakdown?

Osteoarthritis is the most common type of arthritis and is primarily characterized by the degeneration of joint cartilage and the underlying bone. This typically results from the wear and tear of joints over time, which can lead to pain, stiffness, and reduced mobility.

In osteoarthritis, the cartilage that cushions the ends of bones deteriorates, making movements difficult and often painful. This condition usually affects the hands, knees, hips, and spine and is most prevalent in older populations or in individuals who have experienced joint injuries or repetitive stress on their joints.

Unlike rheumatoid arthritis, which is an autoimmune condition that can affect multiple joints and lead to systemic symptoms, osteoarthritis is more localized and primarily associated with the physical deterioration of the joint. Gout is caused by the accumulation of uric acid crystals in the joints and can lead to sudden and severe pain, while psoriatic arthritis is linked with psoriasis and can also present with joint inflammation due to autoimmune processes.