Aim:Thoracolumbar posterior transpedicular stabilization is widely used for many pathologies in neurosurgery practice especially in the last fifty years. The aim of this study to analyze spinal canal type and spine structure of patients make suggestions about preoperative preparation and changes in the surgical procedure to prevent material malposition which is the most common complication of procedure and its clinical outcomes. Material and Methods:A total of 214 cases were examined. Thoracolumbar posterior transpedicular stabilization procedures at each level of thoracolumbar vertebrae were evaluated. 20 parameters were documented and examined retrospectively in each patient. Results:It was found that the laminectomy is not helpful for healing unless there is a certain spinal compression and that ligamentotaxis is beneficial for healing. The correlation between the canal structure and the defective screw delivery has been found (p<0.05). Conclusion:In the light of all these, it was revealed that the spinal structure formed around the canal structure should be first form to evaluate while thoracolumbar posterior transpedicular stabilization applications for the protection of the spinal cord which is the focal point of the spinal structure.