Neurology

Research Abstract

N04 - Spatial Resolution of 3D Printed Stereolithographic Models of the Canine Thoracolumbar Vertebral Column

Thursday, June 14
11:00 AM - 11:15 AM
Location: WSCC 606/607

Anatomic models of the spine are essential for surgical planning, implant evaluation and biomechanical studies.  Cadaver spines are traditionally used despite acquisition and preparation challenges.  Additive (3D) models are easily created, replicated, and customized to specific patients.  The purpose of this study was to compare 3D printed spinal models to ex-vivo spines and computed tomographic (CT) images with the eventual goal of replacing cadaver spines. We hypothesized that the spatial accuracy of 3D printed stereolithographic models of the canine thoracolumbar vertebral column would not differ from cadaveric bones.


Thoracolumbar vertebral columns were harvested from 3 adult canine cadavers. CT scans were acquired and rendered as 3-D surface models.  Stereolithograph models were generated and printed by a stereolithography printer with clear methacrylate photoactivated resin.  Cadaveric specimens were prepared by heated soft tissue maceration.  Uniform measurements were acquired from T12 through L4 from the cadaver spines, CT images, and models. Measured parameters included vertebral height, vertebral foramen height, vertebral foramen width, pedicle widths, vertebral body length, width of cranial articular processes, and width of transverse processes. Repeated measures were acquired in triplicate by a single investigator. Average values were compared using a linear mixed model with random effect and nested individual vertebrae.  There were no significant differences in the 8 individual measurements from the 18 vertebrae between the cadaver, CT scan, and 3D model cohorts (p = 0.3223). Stereolithographic models of the canine thoracolumbar spine are spatially accurate and may be used in place of cadaveric spines for future veterinary studies.

Amanda Jurkoshek, DVM

Neurology & Neurosurgery Resident
Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia MO/Department of Neurology and Neurosurgery, Veterinary Specialty Services, Manchester MO

University of Missouri, Neurology & Neurosurgery Resident, July 2016-present
University of Georgia, Small Animal Medicine & Surgery Rotating Intern, June 2015-June 2016
The Ohio State University, Doctor of Veterinary Medicine, May 2015
Mount Union College, Bachelor of Science in Biology & Mathematics, May 2010

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