Posterior transarticular screw fixation C1-C2

Abstract

The posterior transarticular screw fixation C1/2 (TASF C1/2) was developed by Fritz Magerl in St.Gallen/Switzerland in the early 1980s to stabilize the atlas on the axis. The technique combines the transarticular screw fixation C1/C2 with a Gallie fusion [1]. The TASF C1/2 itself has shown to stabilize very well the rotation and lateral bending while there is still some flexion/extension left. This remaining flexion/extension motion can be suppressed by the addition of a Gallie fusion, therefore providing not only additional stability, but also the bone necessary to obtain a posterior bony fusion.