Rheumatoid atlantoaxial subluxation.
D001172:Arthritis, Rheumatoid / Q000150:complications*; D001368:Axis, Cervical Vertebra; D001927:Brain Diseases / Q000209:etiology; D001270:Cervical Atlas; D006801:Humans; D004204:Joint Dislocations / Q000150:complications / Q000209:etiology* / Q000628:therapy