Cement placement optimization in femoral augmentation using an evolutionary algorithm

Ehsan Basafa, Mehran Armand

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We used the method of Bi-directional Evolutionary Structural Optimization (BESO) to optimize the cement placement in finite element (FE) models of osteoporotic femur specimens. Two different initial conditions, i.e. no initial cement and fully cemented, were used and both converged to the same optimal cement pattern. On average, BESO predicted that, if optimized, augmentation with only 18.6ml of cement will result in 100% increase in the yield load of the models. Simulations also showed a linear relationship between the volume of the cement and the models' stiffness and yield load. Models initially filled with cement had a much more uniform stress distribution among the cemented elements when optimized, compared to the starting configuration. Results suggest that restoring the mechanical properties of osteoporotic femurs is possible with minimal and, therefore, potentially safe volumes of cement.

Original languageEnglish (US)
Title of host publication18th Design for Manufacturing and the Life Cycle Conference; 2013 ASME/IEEE International Conference on Mechatronic and Embedded Systems and Applications
PublisherAmerican Society of Mechanical Engineers
ISBN (Print)9780791855911
DOIs
StatePublished - Jan 1 2013
EventASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2013 - Portland, OR, United States
Duration: Aug 4 2013Aug 7 2013

Publication series

NameProceedings of the ASME Design Engineering Technical Conference
Volume4

Other

OtherASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2013
CountryUnited States
CityPortland, OR
Period8/4/138/7/13

ASJC Scopus subject areas

  • Modeling and Simulation
  • Mechanical Engineering
  • Computer Science Applications
  • Computer Graphics and Computer-Aided Design

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  • Cite this

    Basafa, E., & Armand, M. (2013). Cement placement optimization in femoral augmentation using an evolutionary algorithm. In 18th Design for Manufacturing and the Life Cycle Conference; 2013 ASME/IEEE International Conference on Mechatronic and Embedded Systems and Applications [V004T08A009] (Proceedings of the ASME Design Engineering Technical Conference; Vol. 4). American Society of Mechanical Engineers. https://doi.org/10.1115/DETC2013-13622