Pelvo-spondylitis in rheumatoid arthritis.
D001168:Arthritis; D001172:Arthritis, Rheumatoid / Q000150:complications*; D004194:Disease; D006801:Humans; D010384:Pelvic Bones; D013166:Spondylitis / Q000209:etiology*
ARTHRITIS, RHEUMATOID/complications; PELVIC BONES/diseases; SPONDYLITIS/etiology