Arthritis is a condition that causes pain and inflammation in joints. There are about 100 types of arthritis. Osteoarthritis (OA) is the most common kind. It is a long-term (chronic), degenerative joint disease. Degenerative means that it gets worse over time. It affects mostly middle-aged and older adults. OA causes the breakdown of joint cartilage. It can occur in any joint, but it most often affects the hands, knees, hips or spine.
osteoarthritis vs. rheumatoid arthritis
Rheumatoid arthritis (RA) and osteoarthritis (OA) are the most common types of arthritis. While they share some similarities, there are also several key differences between the two conditions.
RA is a chronic autoimmune condition that causes inflammation in the joints. This can lead to pain, stiffness, and swelling. RA can also affect other parts of the body, such as the lungs and heart. OA, on the other hand, is a degenerative condition that occurs when the cartilage between the joints breaks down. This can cause pain, stiffness, and limited mobility.
Learn more about rheumatoid arthritis.