Tiwari, Atit, Sandeep V. Sonone, and Nishant P. Jaiswal. “New Classification of S1 Pedicle Morphometry Impacting Pedicle Screw Insertion Technique”. International Journal of Research in Orthopaedics 8, no. 6 (October 27, 2022): 694–700. Accessed December 3, 2025. https://www.ijoro.org/index.php/ijoro/article/view/2443.