About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Biomaterials and Implants
|
| Presentation Title |
Tissue-Conserving Total Hip Arthroplasty Removal |
| Author(s) |
Patrick Evers, Magnus Reulbach, Jeffrey Appiah, Eike Jakubowitz, Florian Nürnberger |
| On-Site Speaker (Planned) |
Patrick Evers |
| Abstract Scope |
Revision surgeries account for approximately 10% of total hip arthroplasty procedures in OECD countries, often requiring mechanical extraction techniques that risk femoral damage and prolong recovery. A promising alternative lies in alternating magnetic fields, which heat the implant to soften the surrounding bone cement, thereby reducing the forces required for extraction. To avoid thermal damage to the surrounding tissues, heating must be applied precisely and homogeneously. To predict temperature distribution with regard to implant and inductor geometry, a finite element model was developed in ANSYS Mechanical, using the anatomically shaped Waldemar Link Lubinus SP II stem as reference. The model was validated against inductive heating experiments on surrogate specimens using infrared thermography. Using this model, a targeted heating strategy for cemented implants was designed and tested in-vitro, achieving reductions in pull-out forces exceeding 80% for the aforementioned stem which supports further development toward clinical prototypes for induction heating-assisted implant revision. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Polymers, |