Figure 7. 3D CT reconstruction of C2.
Zones I and II are based on defining the dens (vertical line) as the midline portion of C2 that fuses with its body at the synchondrosis (horizontal line).
Zones I and II are based on defining the dens (vertical line) as the midline portion of C2 that fuses with its body at the synchondrosis (horizontal line).