Rheumatic diseases.
D001171:Arthritis, Juvenile / Q000601:surgery; D015535:Arthritis, Psoriatic / Q000601:surgery*; D001172:Arthritis, Rheumatoid / Q000601:surgery*; D006801:Humans; D011379:Prognosis; D013167:Spondylitis, Ankylosing / Q000601:surgery*