• Apinderpreeet Singh, Pravin Salunke, and Rajeev P Kamble.
• Department of Neurosurgery, PGIMER, Sector 12, Chandigarh, 160012, India.
• Eur Spine J. 2017 May 1; 26 (Suppl 1): 213-217.

BackgroundTraumatic C2-3 dislocation has been often described in the antero-posterior plane but is extremely rare in the lateral plane. Such dislocations have been described in thoraco-lumbar and C1-2. The need to study the imaging in multiple planes has been highlighted to plan proper realignment.MethodsA young male presented with neck pain alone following a train accident. The imaging showed a fracture of C3 splaying it. The C2-3 showed lateral dislocation in the lateral plane with locked C2-3 facets on one side and C3-4 facets on the other. Through the posterior approach, the dislocation was corrected by manipulating (distraction and rotation) the lateral mass screws and rods. Curvilinear rods helped to maintain realignment after reduction. Residual lateral rotation was corrected by subsequent anterior approach.ResultsCompression, distraction and lateral force possibly resulted in such fracture dislocation. Using the technique, the fracture fragments could be realigned perfectly and the reduction was maintained.ConclusionThe saddle shape of the sub-axial cervical spine prevents such lateral dislocations. It is imperative to study the radiology in multiple planes to assess the 'multiplanar dislocation'. Correction is possible with proper planning and manipulation of facets and bodies using the available instrumentation. Though not obtained in this case, a preoperative MRI and a CT angiogram are important in surgery planning.

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