Time Simulation of Bone Adaptation

Mette Bagge

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    Abstract

    The structural adaptation of a three-dimensional finite element model ofthe proximal femur is considered. Presuming the bone possesses the optimalstructure under the given loads, the bone material distribution is foundby minimizing the strain energy averaged over ten load cases with avolume constraint. Theoptimized design is used as a start-configuration for the remodelingsimulation.The parameter characterizing the equilibrium level where no remodeling occurs is estimated from the optimization parameters.The loads vary in magnitude, location and direction simulating timedependent loading. The remodeling algorithm is derived directly from theoptimization recurrence formula, and in a time increment the materialdistribution changes towards the optimal structure for the present load case.The speed of remodeling is taken from clinical data.Numerical examples of respectively increasing and reducing the jointforces are given.
    Original languageEnglish
    Title of host publicationSynthesis in Bio Solid Mechancis
    Place of PublicationLyngby
    Publication date1998
    Pages333-348
    Publication statusPublished - 1998
    EventSynthesis in Bio Solid Mechanics - Lyngby
    Duration: 1 Jan 1998 → …

    Conference

    ConferenceSynthesis in Bio Solid Mechanics
    CityLyngby
    Period01/01/1998 → …

    Cite this

    Bagge, M. (1998). Time Simulation of Bone Adaptation. In Synthesis in Bio Solid Mechancis (pp. 333-348).