title: Atlantoaxial subluxation in juvenile ankylosing spondylitis.
mesh_terms: D000293:Adolescent; D001368:Axis, Cervical Vertebra / Q000000981:diagnostic imaging; D001270:Cervical Atlas / Q000000981:diagnostic imaging; D006801:Humans; D004204:Joint Dislocations / Q000000981:diagnostic imaging / Q000209:etiology*; D008297:Male; D011859:Radiography; D013167:Spondylitis, Ankylosing / Q000150:complications*