title: [Atlas arch aplasia].
abstract: A bilateral aplasia of the dorsal arches of the atlas with persisting tuberculum posterius has been observed by the authors. Since the patient had suffered a severe cranio-cerebral trauma, it became necessary to exclude a possible fracture by differential diagnosis. This was possible by means of CT and conventional x-ray diagnosis. According to the classification of dorsal atlas arch aplasia by von Torklus and Gehle (1975) into 6 types, the diagnosis was, in the case under report, Keller's type of aplasia of the arch of the atlas.
mesh_terms: D000328:Adult; D001930:Brain Injuries / Q000000981:diagnostic imaging; D001270:Cervical Atlas / Q000002:abnormalities*; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D014057:Tomography, X-Ray Computed
vernacular_title: Atlasbogenaplasie.