title: Dysplastic dens of the axis: case report.
abstract: In a patient injured in a bicycle accident, radiological evaluation of the cervical spine revealed an oblique orientation of a dysplastic dens of the axis, which, to our knowledge, has not been reported in the literature. There were no other bony or soft tissue anomalies and no associated instability. This case should draw attention to congenital anomalies of the cranio-cervical junction in trauma patients.
authors.affiliation: Department of Neurosurgery, University Hospital of Geneva, Geneva, Switzerland. mpayer@hotmail.com
authors.forename: M
authors.initials: M
authors.lastname: Payer
authors.forename: P
authors.initials: P
authors.lastname: Bijlenga
authors.forename: J
authors.initials: J
authors.lastname: Delavelle
mesh_terms: D000063:Accidents, Traffic; D000328:Adult; D001368:Axis, Cervical Vertebra / Q000473:pathology*; D001642:Bicycling; D001848:Bone Diseases, Developmental / Q000175:diagnosis* / Q000000981:diagnostic imaging; D002574:Cervical Vertebrae / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D011826:Radial Nerve / Q000000981:diagnostic imaging / Q000293:injuries*; D011885:Radius Fractures / Q000000981:diagnostic imaging / Q000209:etiology; D014057:Tomography, X-Ray Computed