What is the Time Necessary to be Able to Place Transpedicular Screws According to the Chosen Technique?

26 Transpedicular screw placement techniques are technically plaintiffs have relied on navigation intraoperative which is limited by its high cost, limited use of a fluoroscope with the radiological overexposure of the personnel of health and patient offers limited help when placing screws, and vertebral anatomical modifications especially in patients with degenerative pathology result an index of placement-related complications suboptimal of the screws [1,2].