Fig 3. AP (A) and lateral (B–D) intraprocedural fluoroscopic views demonstrate cannula (arrows) and catheter (arrowheads) placement into the superior aspect of the C2 vertebra (A and B). As in Fig 1A, the anterior and posterior laminar lines are outlined, the C2–C3 vertebral body complex is outlined with white arrowheads, and C1, C2, C3, and the os odointoideum (OS) are labeled. Figures 3B–D have the same projection. Figure 3C demonstrates successful placement of methylmethacrylate within the superior aspect of the C2–C3 vertebral body complex. Figure 3D demonstrates a continuous column within the C2–C3 vertebral complex.