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Evaluation of Adaptive Bone Remodeling after Total Hip Arthroplasty Using Finite Element Analysis

In: Perusal of the Finite Element Method

Author

Listed:
  • Yutaka Inaba
  • Hiroyuki Ike
  • Masatoshi Oba
  • Tomoyuki Saito

Abstract

We compared equivalent stress and strain energy density (SED) to bone mineral density (BMD) in the femur after total hip arthroplasty (THA) using subject-specific finite element analysis (FEA). Equivalent stress and BMD were maintained in the distal femur after THA, whereas both decreased in the proximal femur. A significant correlation was observed between the rates of changes in BMD and equivalent stress before and after THA. Therefore, FEA can predict adaptive bone remodeling after mechanical loading changes. Additionally, we evaluated the effects of two different types of stem geometries (Zweymüller-type stem and fit-and-fill-type stem) on load distribution and BMD using the same method. Equivalent stress and BMD in the medial side of the proximal femur were significantly lower with the Zweymüller-type stem than with the fit-and-fill-type stem. Therefore, FEA can assess the effects of stem geometry on bone remodeling after THA. Moreover, we evaluated the effects of bone geometry on load distribution and BMD after THA. Equivalent stress in the medial side of the proximal femur was significantly lower in the stovepipe model implanted with large tapered wedge-type stems than in the champagne flute and intermediate models, and there was a significant loss of BMD in the stovepipe model. Therefore, a large tapered wedge-type stem and stovepipe femur may be associated with significant proximal BMD loss.

Suggested Citation

  • Yutaka Inaba & Hiroyuki Ike & Masatoshi Oba & Tomoyuki Saito, 2016. "Evaluation of Adaptive Bone Remodeling after Total Hip Arthroplasty Using Finite Element Analysis," Chapters, in: Radostina Vasileva Petrova (ed.), Perusal of the Finite Element Method, IntechOpen.
    • Handle: RePEc:ito:pchaps:106572
    DOI: 10.5772/65031
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    More about this item

    Keywords

    finite element analysis; dual-energy X-ray absorptiometry; bone remodeling; hip; arthroplasty;
    All these keywords.

    JEL classification:

    • C60 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - General

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