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. 2022 Feb 2;19(1):202–211. doi: 10.14245/ns.2143008.504

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Copyright © 2022 by the Korean Spinal Neurosurgery Society

This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 1. — Imaging findings for case number 1. Sagittal contrast-enhanced magnetic resonance imaging (MRI) (A) and axial T2-weighted MRI (B) showing an axial tumor (Enneking stage IIB). The Weinstein-Boriani-Biagini stages were 5–10, A–D. Preoperative puncture pathology indicated chordoma. (C) A preoperative design of the 3-dimensional-printed axial lateral mass (LM) prosthesis. (D) An intraoperative image shows the implantation of the posterior LM prosthesis. (E) A postoperative sagittal computed tomography scan of the reconstruction shows that the LM prosthesis is in a good position and that the anterior screw was inserted into the anterior column and LM prostheses. (F) Postoperative sagittal T2-weighted MRI indicates good spinal canal volume. Postoperative lateral (G) and anteroposterior (H) radiographs of the cervical spine show that the LM prosthesis is well positioned.