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Related Experiment Video

Updated: May 22, 2026

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion

Published on: April 11, 2018

Software tool for the prosthetic foot modeling and stiffness optimization.

Matija Strbac¹, Dejan B Popović

¹Faculty of Electrical Engineering, University of Belgrade, 11000 Belgrade, Serbia. sir.matija@gmail.com

Computational and Mathematical Methods in Medicine

|April 27, 2012

Summary

Optimizing prosthetic foot stiffness minimizes knee torque differences during walking. This procedure helps select optimal foot elements and materials for transfemoral prosthesis users.

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Area of Science:

Biomechanics
Biomedical Engineering
Prosthetics

Background:

Transfemoral amputations require prosthetic devices to restore walking function.
Prosthetic foot design significantly impacts gait biomechanics and user comfort.
Optimizing prosthetic foot properties is crucial for reducing secondary complications.

Purpose of the Study:

To present a procedure for optimizing prosthetic foot stiffness.
To enable selection of optimal foot elements and materials for transfemoral prosthesis design.
To minimize the difference between knee joint torques during healthy walking and walking with a prosthesis.

Main Methods:

Developed an optimization procedure based on minimizing the cost function of knee joint torque differences.
Created a simulation environment for interactive variation of prosthetic foot geometry.
Utilized software to estimate optimal prosthetic foot elasticity and geometry.

Main Results:

Altering prosthetic foot attributes like elastic segment length and elasticity significantly changes estimated knee torque.
The simulation environment allows tracking of knee torque variations based on design adjustments.
The procedure successfully estimates optimal prosthetic foot elasticity and geometry.

Conclusions:

The presented procedure effectively optimizes prosthetic foot stiffness for transfemoral prosthesis users.
Interactive simulation aids in understanding the impact of prosthetic foot design on gait biomechanics.
Optimized prosthetic feet can lead to improved walking efficiency and reduced joint stress.