Fig. 1. Images of a 12-year-old male. (A) Computed tomography (CT) scan (sagittal view) with the head in flexed position shows severe atlantoaxial dislocation. There is os odontoideum. (B) CT scan with the head in extension shows reduction in the atlantoaxial dislocation. (C) T2-weighted magnetic resonance imaging shows severe cord compression. (D) Postoperative CT scan shows fixation with satisfactory alignment. (E) Lateral view of plain X-ray showing plate and screw fixation.