Morris, Allyn, Leila Alvandi, Jaime Gomez, I. Martin Levy, and Jacob Schulz. “Construction and Use of an Inexpensive, Free-Hand, Pedicle Screw Placement Model”. Journal of the Pediatric Orthopaedic Society of North America 4, no. S1 (August 15, 2022). Accessed April 30, 2026. https://www.jposna.org/index.php/jposna/article/view/508.