Reconstruction of Upper Cervical Spine and Craniovertebral Junction by Petr Suchomel & Ondrej Choutka

Author:Petr Suchomel & Ondrej Choutka
Language: eng
Format: epub
Publisher: Springer Berlin Heidelberg, Berlin, Heidelberg

8.3 Radiology

CT especially in 3D or midsagittal reconstruction (Fig. 8.1) and lateral cervical spine radiography (Fig. 8.2) can show increased both basion – dens interval (BDI) as well as basion – axial interval (BAI); the cut-off value is considered 12 mm for both parameters [2, 12, 13]. The Powers ratio is greater than 1.0 [23]. Associated injuries to the C0-C2 complex can also be appreciated this way and are rather common in AOD patients [2, 14]. Cranial CT may reveal evidence of intracranial traumatic injuries.

Fig. 8.1Atlantooccipital dislocation (AOD) with distraction type II according to Traynelis. (a) Lateral view of 3D reconstruction, note increased BDI. (b) Reconstruction in coronal plane

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