MIRA University of Twente
Department of Biomechanical Engineering

A passive energy-efficient actuation system for a transfemoral prosthesis (Maarten Hoes)


Maarten Hoes


Biomedical Engineering (BMT)




Prof. Dr. Ir. H.F.J.M. Koopman

Ir. E.E.G. Hekman



Starting date:


Maarten Hoes


Colloquium 1

Design and Testing of an Energy-Efficient

Trans-Femoral Prosthesis


Walking is one of the most complex totally integrated movements and yet is the movement which is the most common and taken-for-granted. Approximately 3000 lower extremity amputations are performed in The Netherlands every year.

An amputation has a very big influence on walking. Amputees walk slower and use up to 80% more energy per meter. If it would be possible to support the movement without the need for power, the amputee would be less dependent.

The design of such a passive energy-efficient actuation system for trans-femoral prostheses is the topic of the “ReflexLeg” project of the University of Twente. This Master-study is part of the Reflex leg project.


To “develop and test a prototype of a passive actuation system which is able to temporarily store energy to be released at a later time at the same or the other joint to support gait of trans-femoral amputees”.


Multiple concepts will be developed. After simulation one concept is chosen and thoroughly tested on a prosthesis or in another test setup.

Further information

No Further information.