title: Atlantoxial dislocation in Down's syndrome. Report of two patients requiring surgical correction.
mesh_terms: D001368:Axis, Cervical Vertebra; D001270:Cervical Atlas; D002648:Child; D004314:Down Syndrome / Q000150:complications*; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery; D011859:Radiography; D014103:Torticollis / Q000209:etiology