? Wolfgang Miehle: Gelenk- und WirbelsäulenrheumaRheumatoid arthritis is a systemic disorder, that is, it affects your entire body and not just the hip joint. Rheumatoid arthritis and lupus typically affect both hips at the same time, while osteoarthritis and psoriatic arthritis may occur in one hip but not the other. Most people with psoriatic ar