1. Surgical technique of C1 LMS London, St. Paul cathedral

2. Surgical technique of C2 lamina screw UK, Stonehenge

3. Surgical technique of C2 pedicle screw London, Buckingham palace

4. Chiang Mai

5. Surgical technique of C2 pars screw London, Big Ben

6. Surgical technique of C1/2 Transarticular screw London, Tower Bridge

7. Surgical technique of C3-7 LMS Ramses Rosetta stone British museum

8. Surgical technique of C3-7 Transarticular screw London eye

9. Surgical technique of C7 laminar screw Westminster Abbey

10. Thank you for your attention