TY - JOUR T1 - Posterior percutaneous transarticular stand-alone screw instrumentation of C1-C2 with endoscopic assistance: A report of two cases JO - Neurocirugía T2 - AU - Lvov,Ivan AU - Grin,Andrey AU - Godkov,Ivan AU - Kordonskiy,Anton AU - Krylov,Vladimir SN - 11301473 M3 - 10.1016/j.neucir.2019.08.006 DO - 10.1016/j.neucir.2019.08.006 UR - https://www.revistaneurocirugia.com/es-posterior-percutaneous-transarticular-stand-alone-screw-articulo-S1130147319300995 AB - We present two cases of minimally invasive posterior transarticular screw fixation of C1-C2. The points for screw insertion were visualized by endoscopy via the instrumental port. A patient with a type III odontoid fracture with subluxation underwent a minimally invasive posterior stand-alone transarticular screw fixation. Despite the application of compression screws, for technical reasons, only minimal compression on the anterior third of the C1-C2 lateral joint was achieved. However, complete fracture fusion was achieved with stable fibrous C1-C2 fusion 2.5 years postoperatively. A second patient with a chronic type II odontoid fracture underwent percutaneous C1-C2 fixation by the same method. After 2 years, fracture fusion and C1-C2 lateral mass ankylosis were achieved. The use of a tubular retractor and endoscopy in stand-alone screw fixation of C1-C2 allows direct visualization of the screw entry point and decreases surgical trauma. This procedure might be an alternative to other methods of transarticular instrumentation. ER -