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Bone Remodeling

Bone Remodeling

Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.

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Bone remodelling in implanted proximal femur using topology optimization and parameterized cellular model.

Basil Mathai¹, Santanu Dhara², Sanjay Gupta¹

¹Department of Mechanical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721 302, West Bengal, India.

Journal of the Mechanical Behavior of Biomedical Materials

|October 30, 2021

Summary

This study introduces a new computational framework for predicting bone remodelling around femoral implants. The multiscale topology optimization method accurately models bone density changes, aligning with clinical observations and micro-CT data.

Keywords:

Hip stem Microstructure remodelling Parameterized cellular model Proximal femur Topology optimization

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Last Updated: Oct 15, 2025

Establishment of a Segmental Femoral Critical-size Defect Model in Mice Stabilized by Plate Osteosynthesis

Establishment of a Segmental Femoral Critical-size Defect Model in Mice Stabilized by Plate Osteosynthesis

Published on: October 12, 2016

Establishing a Diaphyseal Femur Fracture Model in Mice

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Published on: December 9, 2022

Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy

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Published on: February 17, 2023

Area of Science:

Computational biomechanics
Biomaterials engineering
Orthopedic implant research

Background:

Accurate finite element (FE) modeling of implant-bone interactions is crucial for predicting bone remodeling.
Existing FE simulations often use simplifications in muscle loading and material properties, limiting predictive accuracy.
Bone adaptation significantly alters bone apparent density and microstructure, necessitating advanced modeling approaches.

Purpose of the Study:

To develop a novel computational framework for predicting bone remodeling around uncemented femoral implants.
To utilize multiscale topology optimization and a parameterized cellular model for enhanced prediction accuracy.
To evaluate the proposed scheme by comparing its predictions against isotropic strain energy density (SED) and orthotropic formulations.

Main Methods:

Development of a multiscale topology optimization framework.
Integration of a parameterized cellular model to represent bone microstructure.
Comparison of remodeling predictions with SED and orthotropic models, and validation against micro-CT data.

Main Results:

The optimization scheme successfully predicted characteristic bone morphology, including functional groups and low-density regions comparable to micro-CT images.
A higher correlation (0.6472) was observed between topology optimization and SED models compared to orthotropic predictions (0.4219).
Bone density distributions showed good comparability with clinical observations, particularly in the proximal femur, despite localized variations.

Conclusions:

The proposed computational scheme is a viable method for incorporating bone anisotropy into remodeling predictions.
Multiscale topology optimization offers a promising approach for accurate simulation of bone adaptation around implants.
Further refinement of boundary condition modeling is needed for improved accuracy in 3D models.