P9.9 - SMART-HIP - Entwicklung und Auslegung eines Sensorsystems für die Messung der Verankerung von Implantaten
- Event
- 12. Dresdner Sensor-Symposium 2015
2015-12-07 - 2015-12-09
Hotel Elbflorenz, Dresden - Chapter
- P9. Sensoren in der Medizin
- Author(s)
- T. Bender, M. Sass, R. Bader, D. Kluess - Universitätsmedizin Rostock/D
- Pages
- 332 - 336
- DOI
- 10.5162/12dss2015/P9.9
- ISBN
- 978-3-9813484-9-1
- Price
- free
Abstract
Loosening of total hip replacements (THR) is still the main reason for revision. Approximately 36,000 revisions are necessary in Germany per year. Due to low sensitivity of currently applied diagnostic methods, e.g. radiographs, the loosening status is often identified late. To optimize the accuracy, an acoustic method was investigated. Therefore, implants with an integrated magnetizable ball were inserted in artificial femoral bone models. The ball inside the implant was excited externally using a
pair of electromagnetic coils to produce an impingement of the ball and thus perform a sound analysis. In this study, a sensor array, which is based on the vibration and attenuation analysis, is used to classify three different levels of loosening.