Load adaptation through bone remodeling: a mechanobiological model coupled with the finite element method

Area of Science:

• Biomechanical Engineering
• Computational Biology
• Tissue Engineering

Background:

• Bone remodeling is a complex biological process crucial for maintaining skeletal integrity.
• Understanding bone adaptation to mechanical loading is vital for treating bone diseases and designing implants.

Purpose of the Study:

• To develop and validate a novel tissue-scale mechanobiological model of bone remodeling.
• To investigate bone's adaptive response to different mechanical loading conditions.

Main Methods:

• A computational model integrating mechanosensitivity and cellular signaling pathways was developed.
• Linear elastostatic analysis and the finite element method were used to calculate strain energy density (SED).
• A phenomenological law described the relationship between cellular activity, bone density, and mechanical properties.

Main Results:

• The model successfully simulated bone adaptation to distinct loading conditions.
• Bone morphology adapted to achieve trabecular distribution necessary for load-bearing.
• The resulting bone morphology reflected the orientation of the applied load.

Conclusions:

• The proposed mechanobiological model effectively captures the interplay between mechanical and biological factors in bone remodeling.
• This approach provides a valuable tool for studying bone adaptation and informing therapeutic strategies.