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Integrating molecular and cellular kinetics into a coupled continuum mechanobiological stimulus for bone reconstruction

Type
Articles dans des revues avec comité de lecture
Author
GEORGE, Daniel
217648 Laboratoire des sciences de l'ingénieur, de l'informatique et de l'imagerie [ICube]
ALLENA, Rachele
466360 Institut de Biomecanique Humaine Georges Charpak
REMOND, Yves
217648 Laboratoire des sciences de l'ingénieur, de l'informatique et de l'imagerie [ICube]

URI
http://hdl.handle.net/10985/17460
Date
2018
Journal
Continuum Mechanics and Thermodynamics

Abstract

The development of multiphysics numerical models to predict bone reconstruction is a very challenging task as it is a complex phenomenon where many biological, chemical and mechanical processes occur at different lengths and timescales.We present here amechanobiological theoretical numerical model accounting for both the mechanical and biological environments to predict the bone reconstruction process through the use of a global stimulus integrating the contributions of applied external mechanical loads, cellular activities and cellular nutriments such as oxygen and glucose supply. The bone density evolution will hence depend on the overall stimulus and evolve accordingly to the intensities of each of its individual constituents. We show their specific influences and couplings on a simple two-dimensional geometry and confirm that, although the mechanics plays a crucial role in the bone reconstruction process, it is still highly dependent on the occurring biological events and will evolve accordingly.

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