title: Dislocation of the sacroiliac joint associated with rheumatoid arthritis. A case report.
abstract: Rheumatoid arthritis (RA) affects the articular surfaces and the ligamentous supporting structures of synovial-lined joints. In approximately one-fourth of the patients with RA, the sacroiliac joints demonstrate radiographic changes of subchondral bony erosions and articular destruction, as well as ankylosis. Subluxation or dislocation of the sacroiliac joint usually is associated with significant trauma to the pelvis. Nontraumatic disruption of the sacroiliac joint is a rare occurrence, but it should be considered in evaluating a patient with longstanding RA, sacroiliac joint tenderness, and radiating lower extremity symptoms.
mesh_terms: D000368:Aged; D001172:Arthritis, Rheumatoid / Q000150:complications*; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000209:etiology*; D012446:Sacroiliac Joint / Q000293:injuries*