Stress alterations in vertebroplastyand kyphoplasty: A microstructural finite-element study

Tony S. Keller, Victor Kosmopoulos

Research output: Contribution to journalConference article

Abstract

An anatomically accurate, axisymmetric, microstructural finite element (FE) model was constructed from μCT images to examine the effects of cement augmentation on trabecular bone stress distributions in treated and adjacent thoracic vertebrae. Prior to augmentation, vertebral damage was simulated using an elasto-plastic, iterative FE scheme. Several cement repair strategies (vertebroplasty and kyphoplasty) were subsequently studied using the damaged microstructural motion segment model. The simulations indicated that cement fill and geometry play an important role in damaged vertebral motion segment stresses distributions.

Original languageEnglish
Pages (from-to)256-261
Number of pages6
JournalProceedings of the IASTED International Conference on Modeling and Simulation
StatePublished - 1 Dec 2004
EventProceedings of the Fifteenth IASTED Internatinal Conference on Modeling and Simulation - Marina Del Rey, CA, United States
Duration: 1 Mar 20043 Mar 2004

Keywords

  • Finite element analysis
  • Kyphoplasty
  • Microdamage
  • Polymethylmethacrylate
  • Trabecular bone
  • Vertebroplasty

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