title: Fractures of the dens complicating ankylosing spondylitis with atlantooccipital fusion.
abstract: Patients with ankylosing spondylitis are prone to fractures. Fractures tend to occur in the lower cervical spine disc space. We describe 2 patients with odontoid fractures. Both patients had atlantooccipital fusion which may have increased their susceptibility for dens fractures. One patient had Crohn's disease.
authors.affiliation: Department of Radiology, Northwestern University Medical School, Chicago, IL 60611.
authors.forename: F H
authors.initials: FH
authors.lastname: Miller
authors.forename: L F
authors.initials: LF
authors.lastname: Rogers
mesh_terms: D000328:Adult; D000368:Aged; D001269:Atlanto-Occipital Joint / Q000000981:diagnostic imaging / Q000473:pathology*; D050723:Fractures, Bone / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D015212:Inflammatory Bowel Diseases / Q000150:complications / Q000473:pathology; D008297:Male; D009809:Odontoid Process / Q000000981:diagnostic imaging / Q000293:injuries* / Q000473:pathology; D013123:Spinal Fusion; D013167:Spondylitis, Ankylosing / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed