Journal Pre-proof Navigated Ultrasonic Osteotomy to Aid in En Bloc Chordoma Resection via Spondylectomy Donald K. Detchou, BA, Ryan Dimentberg, BS, Kerry A. Vaughan, MD, Rachel Kolster, MD, Benjamin M. Braslow, MD, Neil R. Malhotra, MD PII: S1878-8750(20)31785-X DOI: https://doi.org/10.1016/j.wneu.2020.08.021 Reference: WNEU 15715 To appear in: World Neurosurgery Received Date: 5 May 2020 Revised Date: 2 August 2020 Accepted Date: 3 August 2020 Please cite this article as: Detchou DK, Dimentberg R, Vaughan KA, Kolster R, Braslow BM, Malhotra NR, Navigated Ultrasonic Osteotomy to Aid in En Bloc Chordoma Resection via Spondylectomy, World Neurosurgery (2020), doi: https://doi.org/10.1016/j.wneu.2020.08.021. This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2020 Published by Elsevier Inc.