Rheumatoid arthritis (RA) is a systemic disorder that affects your entire body, including your hip joint. Unlike osteoarthritis, this inflammation is related to the immune system attacking healthy tissue within your joints, rather than progressive wear and tear.
Generally, rheumatoid arthritis causes your synovial lining (a unique capsule that helps your joint move smoothly) to swell. This swelling results in pain in one or both hips, and eventual deterioration of cartilage and bone.
Rheumatoid arthritis can affect people of all ages, including children. This condition is also more commonly found in women than in men.