title: [Diagnosis of instability of the upper cervical spine by functional computed tomography].
abstract: The evaluation by means of functional x-rays, of rotatory instability of the upper cervical spine as a result traumatic or inflammatory destruction of the ligamentous apparatus, is unsatisfactory. Functional CT of the upper cervical spine allows measurement of the segmental rotatory movements. 9 healthy adults and 30 patients were examined after neck injury via functional CT's. A rotation between occiput and atlas greater than 9 degrees, between atlas and axis over 50 degrees, the left-right difference at the level C0/C1 greater than 6 degrees and at the level C1/C2 over 10.5 degrees point to a suspicion of hypermobility or instability.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D020968:Brachial Plexus Neuritis / Q000000981:diagnostic imaging / Q000209:etiology; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging* / Q000293:injuries / Q000502:physiology; D006801:Humans; D007593:Joint Instability / Q000000981:diagnostic imaging* / Q000503:physiopathology; D008875:Middle Aged; D013122:Spinal Diseases / Q000000981:diagnostic imaging* / Q000209:etiology / Q000503:physiopathology; D014057:Tomography, X-Ray Computed / Q000379:methods*
vernacular_title: Diagnostik der Instabilität der oberen Halswirbelsäule mittels funktioneller Computertomographie.