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Figure 4: Salvage of failed odontoid screw fixation with the Magerl technique (a– d). Patient described in Figure 3 then underwent removal of the odontoid screw and a salvage posterior fixation using C1-C2 transarticular screw with a good bony fusion and improvement in neurological deficits. (a) O arm-guided placement of right C1-C2 transarticular K wire; (c) O arm-guided placement of left C1-C2 transarticular K wire; (b) X-ray showing the well-placed Magerl's C1-C2 transarticular screws (TAS); and, (d) Follow-up computed tomography (CT) scan at 3 months showing the well-fused fracture

Figure 4: Salvage of failed odontoid screw fixation with the Magerl technique (a– d). Patient described in Figure 3 then underwent removal of the odontoid screw and a salvage posterior fixation using C1-C2 transarticular screw with a good bony fusion and improvement in neurological deficits. (a) O arm-guided placement of right C1-C2 transarticular K wire; (c) O arm-guided placement of left C1-C2 transarticular K wire; (b) X-ray showing the well-placed Magerl's C1-C2 transarticular screws (TAS); and, (d) Follow-up computed tomography (CT) scan at 3 months showing the well-fused fracture