PMID: 9438809Jan 23, 1998Paper

Functional morphology of the spinal canal after endplate, wedge, and burst fractures

Journal of Spinal Disorders
M KifuneT R Oxland

Abstract

Changes in the canal diameter during physiological motions are important considerations in the treatment of patients who have a burst fracture with the presence of bony fragments, but without neurologic deficit. In this in vitro study, the changes in the soft-canal diameter of the thoracolumbar region, when intact and after different fractures, was investigated under several different loading conditions. The soft-canal diameter was clearly identified on the lateral radiographs by attaching a series of steel balls to the posterior longitudinal ligament and ligamentum flavum in the midsagittal plane. Endplate, wedge, and burst fractures were produced incrementally in 19 three-vertebrae human cadaveric spine specimens by high-speed impacts. After each injury, a series of functional lateral radiographs were taken. The minimal canal diameter (MCD) was obtained by digitizing the images of the steel balls on radiographs using a custom-designed computer program. In the intact specimens, the MCD at the disc level changed significantly in flexion, extension, and compression, when compared with the MCD in the unloaded neutral position. However, the changes were small. The MCD after endplate and wedge fractures changed in a similar way. Ho...Continue Reading

Citations

Jul 13, 2004·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Markus SchultheissErich Hartwig
Oct 30, 2013·Medical & Biological Engineering & Computing·Léo FradetPierre-Jean Arnoux
Feb 11, 2014·The Spine Journal : Official Journal of the North American Spine Society·Nicola BrandoliniRichard M Hall
Jun 30, 2014·Journal of Clinical Neuroscience : Official Journal of the Neurosurgical Society of Australasia·Shayan FakurnejadZachary A Smith
Feb 16, 2013·European Journal of Orthopaedic Surgery & Traumatology : Orthopédie Traumatologie·Qin-liang LiRujie Qin
Nov 29, 2005·Medical Engineering & Physics·Tian-Xia QiuEe-Chon Teo
Aug 17, 2005·Biomaterials·Jorrit-Jan VerlaanWouter J A Dhert
Dec 2, 2017·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Brian D StemperBarry S Shender
Sep 4, 2020·Medical & Biological Engineering & Computing·Wu-Jie Li, Li-Xin Guo

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