title: [Unusual coincidence of dens aplasia and atlas malformation with early childhood spastic tetraparesis. Case report on the differential diagnosis of inflammatory atlantoaxial dislocation].
abstract: We report on the case of a 33 year old woman with acute tetraparesis and radiological evidence of atlantoaxial dislocation who had to undergo several attempts at osteosynthetic stabilisation of the cervical spine. She was afflicted with a spastic walk since the early years of childhood which had been explained by encephalitis after umbilical sepsis. The etiology of this severe and grave cervical instability however was found in a very rare congenital developmental disturbance of the occipitocervical passage with dystope os odontoid, extreme hypoplasia of the dens axis and additionally an osseous link between left processus transversus atlantis and occiput. Diagnostic problems arose from a simultaneous psoriasis, because a psoriatic cervical spondylitis seemed possible.
mesh_terms: D000328:Adult; D001268:Atlanto-Axial Joint / Q000000981:diagnostic imaging* / Q000601:surgery; D001368:Axis, Cervical Vertebra / Q000002:abnormalities*; D001270:Cervical Atlas / Q000002:abnormalities* / Q000000981:diagnostic imaging; D002574:Cervical Vertebrae / Q000601:surgery; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000000981:diagnostic imaging* / Q000601:surgery; D009128:Muscle Spasticity / Q000000981:diagnostic imaging; D009809:Odontoid Process / Q000002:abnormalities* / Q000000981:diagnostic imaging; D011565:Psoriasis / Q000000981:diagnostic imaging; D011782:Quadriplegia / Q000000981:diagnostic imaging* / Q000601:surgery; D011859:Radiography; D012086:Reoperation; D013117:Spinal Cord Compression / Q000000981:diagnostic imaging; D013166:Spondylitis / Q000000981:diagnostic imaging
vernacular_title: Uber eine ungewöhnliche Koinzidenz von Densaplasie und Atlasfehlbildung mit frühkindlicher spastischer Tetraparese. Kasuistischer Beitrag zur Differentialdiagnose der entzündlichen atlantoaxialen Dislokation.