An Innovative Approach for Noninvasive Evaluation of Stability at the Implant-Bone Interface for Transfemoral Osseointegrated Implants
Abstract
The objective is to develop a non-invasive evaluation tool to assess the stability of osseointegrated implants. We have built physical models of implants integrated in bone surrogates to conduct benchtop experiments. We investigated the response of the implant system to various excitation parameters. Incorporating the implant components that are used in the clinical setting has guided the parameters that we have investigated for the redesign such as the excitation direction (transverse vs. axial), impact mass, and impact rod tip. We have developed and validated a novel analytical modeling approach specific to the implant system. We have developed finite element models of the system to allow simulations in both the modal analysis and explicit time domain to better understand the response to impact loading and to cross-validate with the experimental data analysis. Through our testing and modelling, we have learned that the acceleration measurement on the impact rod alone does not provide sufficient data and as such, we have developed and validated a new approach to monitor the acceleration on the implant system. This important step, as well as development of new electronics, communication, and software interfaces has allowed us to collect both laboratory and clinical participant data using the existing version of the impact hand piece while we work towards a redesigned hand piece.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 2022
- Accession Number
- AD1190505
Entities
People
- Eric Beaudry
- Jacqueline S Hebert
- Lindsey Westover
- Mostafa Mohammed