Modern posterior screw techniques in the pediatric cervical spine

Figure 5 C1-C2 transarticular screws. A: Sagittal computed tomography (CT) of a fully contained and well placed transarticular screw in a 10 year-old male with Down’s syndrome and os odontoideum; B: Sagittal CT cut demonstrating the placement of a structural iliac crest graft cable grafted in between C1 and C2 which supplemented transarticular screws in an 8 year-old patient with C1-C2 instability.