Abstract
C1–2 fusion is indicated in atlantoaxial instabilities. C1–2 transarticular screws described by Magerl and Seemann [1] are an effective option for durable fusion. Vertebral artery injuries may occur in 4 % of patients undergoing transarticular screw placement. One of the causes of vertebral artery injuries might be the abnormal trajectory of the artery in the pars of C2, whereby the artery might cross the path of the transarticular screw trajectory. Preoperative CT scan is a suitable method to assess VA trajectory. In case of contraindication for transarticular screws, the alternative would be to use the lateral mass of C1 at that level and the pars of C2 for the construct. To optimise and facilitate screw placement, 3D fluoroscopy-based navigation has been used.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
