Characterization and Modeling of the Inductive Heating of CoCrMo Hip Implants to Facilitate Intentional Removal

authored by: Patrick Evers, Timo Suhr, Magnus Reulbach, Crystal Emonde, Eike Jakubowitz, Henning Windhagen, Florian Nürnberger
Abstract: Revision surgery for total hip arthroplasties involves removing the endoprosthesis stem from the patient's femur. The conventional method of extraction carries a substantial risk of peripheral bone damage, impeding rehabilitation and reducing stability of the revision endoprosthesis. A promising option for intentional implant removal in revision hip arthroplasty is the use of transcutaneous induction heating to soften the thermoplastic bone cement to reduce extraction forces and increase patient safety. Accurate knowledge of the implant surface temperatures generated during induction heating is essential to avoid thermal damage to surrounding tissues. In this work, an in-silico model for the induction heating of CoCrMo hip endoprostheses was developed and validated using IR thermography. This model allows for the prediction of surface temperature distributions on hip implants in the low temperature ranges required for intentional implant removal and aids in the design of inductor geometries to achieve homogeneous heating of hip endoprostheses.
Organisation(s): CRC/Transregio 298: Safety Integrated and Infection Reactive Implants (SIIRI)
Institute of Materials Science
External Organisation(s): Hannover Medical School (MHH)
Type: Conference contribution
Publication date: 26.06.2024
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Biomedical Engineering, Instrumentation, Artificial Intelligence, Computer Science Applications, Signal Processing
Sustainable Development Goals: SDG 3 - Good Health and Well-being
Electronic version(s): https://doi.org/10.1109/memea60663.2024.10596835 (Access: Closed)