title: Hangman's fracture in ankylosing spondylitis preceded by vertical subluxation of the axis.
mesh_terms: D000368:Aged; D001368:Axis, Cervical Vertebra; D001270:Cervical Atlas; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging; D005260:Female; D050723:Fractures, Bone / Q000150:complications*; D006801:Humans; D004204:Joint Dislocations / Q000150:complications*; D011859:Radiography; D013167:Spondylitis, Ankylosing / Q000150:complications*