Patient-specific finite element modeling for femoral bone augmentation

Ehsan Basafa, Robert S. Armiger, Michael D. Kutzer, Stephen M Belkoff, Simon C. Mears, Mehran Armand

Research output: Contribution to journalArticle

Abstract

The aim of this study was to provide a fast and accurate finite element (FE) modeling scheme for predicting bone stiffness and strength suitable for use within the framework of a computer-assisted osteoporotic femoral bone augmentation surgery system. The key parts of the system, i.e. preoperative planning and intraoperative assessment of the augmentation, demand the finite element model to be solved and analyzed rapidly. Available CT scans and mechanical testing results from nine pairs of osteoporotic femur bones, with one specimen from each pair augmented by polymethylmethacrylate (PMMA) bone cement, were used to create FE models and compare the results with experiments. Correlation values of R2 = 0.72-0.95 were observed between the experiments and FEA results which, combined with the fast model convergence (~3 min for ~250,000 degrees of freedom), makes the presented modeling approach a promising candidate for the intended application of preoperative planning and intraoperative assessment of bone augmentation surgery.

Original languageEnglish (US)
Pages (from-to)860-865
Number of pages6
JournalMedical Engineering and Physics
Volume35
Issue number6
DOIs
StatePublished - 2013

Fingerprint

Thigh
Bone
Bone and Bones
Surgery
Planning
Bone cement
Bone Cements
Computerized tomography
Mechanical testing
Polymethyl Methacrylate
Femur
Experiments
Stiffness
Finite element method

Keywords

  • Biomechanics
  • Bone cement
  • Femoroplasty
  • Finite element analysis

ASJC Scopus subject areas

  • Biomedical Engineering
  • Biophysics

Cite this

Patient-specific finite element modeling for femoral bone augmentation. / Basafa, Ehsan; Armiger, Robert S.; Kutzer, Michael D.; Belkoff, Stephen M; Mears, Simon C.; Armand, Mehran.

In: Medical Engineering and Physics, Vol. 35, No. 6, 2013, p. 860-865.

Research output: Contribution to journalArticle

Basafa, Ehsan ; Armiger, Robert S. ; Kutzer, Michael D. ; Belkoff, Stephen M ; Mears, Simon C. ; Armand, Mehran. / Patient-specific finite element modeling for femoral bone augmentation. In: Medical Engineering and Physics. 2013 ; Vol. 35, No. 6. pp. 860-865.
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