International Society of Biomechanics
Silver sponsor

Development of a medical device to characterize the biomechanical stability of orthopedic implants: an acoustic method

PhD position
19 Oct 2018
19 Oct 2018
Creteil, n/a

Total hip replacements are among the most common procedures in orthopedic surgery. The implants are often impacted in a bone cavity in order to obtain an adapted primary stability, an important factor for the surgical success because it significantly reduces the risks of aseptic loosening. However, it remains difficult to measure the primary stability of such implants and empirical approaches are still used by clinicians who rely in particular on the noise produced during the impact of the hammer on the ancillary supporting the implant.

The MSME laboratory has developed a new patented method to track the insertion of implants into bone and to estimate their primary stability. This method uses an instrumented hammer to extract information on the bone-implant interface, which is the only relevant criterion for surgical success. Our approach, perfectly safe for patients, has been validated ex vivo and on anatomical subjects. The goal of this work is to bring the technology on the eve of the human clinic.
The work will consist in developing and improving the available device so as to adapt it to the configurations of interest and to a clinical trial. The candidate will design a device and perform histological analyzes as well as biomechanical tear tests. In addition, modeling and numerical simulation work will be necessary to better understand the phenomena involved.

This work will take place in the Multi-scale Modeling and Simulation laboratory and will be carried out in close collaboration with the orthopedic department of the hospital Henri Mondor. A start-up for clinical validation and commercialization of the technique is incubated in the laboratory.

You have a Master degree in engineering science (“Bac +5”) in the field of mechanics, acoustics or biomechanics. Your dynamism, your rigor, your sense of listening and your adaptability will make the difference. You also have an appetite for the field of biotechnology, although skills in this area are not essential.