PMID: 16532630Mar 15, 2006Paper

Evaluation of filler materials used for uniform load distribution at boundaries during structural biomechanical testing of whole vertebrae

Journal of Biomechanical Engineering
Do-Gyoon KimYener N Yeni

Abstract

This study was designed to compare the compressive mechanical properties of filler materials, Wood's metal, dental stone, and polymethylmethacrylate (PMMA), which are widely used for performing structural testing of whole vertebrae. The effect of strain rate and specimen size on the mechanical properties of the filler materials was examined using standardized specimens and mechanical testing. Because Wood's metal can be reused after remelting, the effect of remelting on the mechanical properties was tested by comparing them before and after remelting. Finite element (FE) models were built to simulate the effect of filler material size and properties on the stiffness of vertebral body construct in compression. Modulus, yield strain, and yield strength were not different between batches (melt-remelt) of Wood's metal. Strain rate had no effect on the modulus of Wood's metal, however, Young's modulus decreased with increasing strain rate in dental stone whereas increased in PMMA. Both Wood's metal and dental stone were significantly stiffer than PMMA (12.7 +/- 1.8 GPa, 10.4 +/- 3.4 GPa, and 2.9 +/- 0.4 GPa, respectively). PMMA had greater yield strength than Wood's metal (62.9 +/- 8.7 MPa and 26.2 +/- 2.6 MPa). All materials exhibi...Continue Reading

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Citations

Nov 5, 2008·American Journal of Veterinary Research·Luis M Rubio-MartínezMark B Hurtig
Feb 5, 2014·International Orthopaedics·Reinhard SchuhReinhard Windhager
Feb 18, 2016·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·M WilleggerR Schuh
Oct 25, 2016·Journal of the Mechanical Behavior of Biomedical Materials·Hannah M GustafsonBenedikt Helgason
Feb 27, 2019·Radiation Protection Dosimetry·Michael LasithiotakisConstantinos Potiriadis
Oct 7, 2019·Annals of Work Exposures and Health·Neeraj ShandilyaWouter Fransman
Nov 20, 2019·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Madeleine WilleggerReinhard Schuh
Nov 5, 2019·European Journal of Trauma and Emergency Surgery : Official Publication of the European Trauma Society·Johannes Christof HopfPol Maria Rommens

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