Details
| Original language | English |
|---|---|
| Article number | 106905 |
| Number of pages | 7 |
| Journal | Journal of the Mechanical Behavior of Biomedical Materials |
| Volume | 164 |
| Early online date | 23 Jan 2025 |
| Publication status | E-pub ahead of print - 23 Jan 2025 |
Abstract
In hip arthroplasty, relative movements between the femoral stem and bone can lead to implant loosening, resulting in extensive bone loss. Acoustic emission (AE) analysis is a promising technique for a nondestructive and noninvasive detection of these relative movements. To develop such a detection method, in vitro investigations using piezoelectric AE sensors on implant stems in artificial or human femora are required to characterize the AE signals induced by loosening. This study aims to identify suitable coupling materials to bridge the gap between the planar AE-sensor surface and the exposed freeform surface of the femur. Four coupling materials, both synthetic and natural, with acoustic properties similar to human soft tissue were investigated for signal attenuation and repeatability between tests. The synthetic materials demonstrated better inter-sample repeatability. One synthetic material exhibited higher flexibility, enabling better adaptation to the sensor and resulting in significantly lower signal attenuation.
Keywords
- Acoustic emission analysis, Coupling material, In vitro investigation, Noninvasive loosening detection, Total hip arthroplasty
ASJC Scopus subject areas
- Materials Science(all)
- Biomaterials
- Engineering(all)
- Biomedical Engineering
- Engineering(all)
- Mechanics of Materials
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In: Journal of the Mechanical Behavior of Biomedical Materials, Vol. 164, 106905, 04.2025.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Soft tissue-like coupling materials for in vitro acoustic emission studies in total hip arthroplasty
AU - Reulbach, Magnus
AU - Meyer zu Vilsendorf, Magdalena
AU - Yarcu, Sinan
AU - Behrens, Bernd Arno
AU - Hübner, Sven
AU - Jakubowitz, Eike
N1 - Publisher Copyright: © 2025
PY - 2025/1/23
Y1 - 2025/1/23
N2 - In hip arthroplasty, relative movements between the femoral stem and bone can lead to implant loosening, resulting in extensive bone loss. Acoustic emission (AE) analysis is a promising technique for a nondestructive and noninvasive detection of these relative movements. To develop such a detection method, in vitro investigations using piezoelectric AE sensors on implant stems in artificial or human femora are required to characterize the AE signals induced by loosening. This study aims to identify suitable coupling materials to bridge the gap between the planar AE-sensor surface and the exposed freeform surface of the femur. Four coupling materials, both synthetic and natural, with acoustic properties similar to human soft tissue were investigated for signal attenuation and repeatability between tests. The synthetic materials demonstrated better inter-sample repeatability. One synthetic material exhibited higher flexibility, enabling better adaptation to the sensor and resulting in significantly lower signal attenuation.
AB - In hip arthroplasty, relative movements between the femoral stem and bone can lead to implant loosening, resulting in extensive bone loss. Acoustic emission (AE) analysis is a promising technique for a nondestructive and noninvasive detection of these relative movements. To develop such a detection method, in vitro investigations using piezoelectric AE sensors on implant stems in artificial or human femora are required to characterize the AE signals induced by loosening. This study aims to identify suitable coupling materials to bridge the gap between the planar AE-sensor surface and the exposed freeform surface of the femur. Four coupling materials, both synthetic and natural, with acoustic properties similar to human soft tissue were investigated for signal attenuation and repeatability between tests. The synthetic materials demonstrated better inter-sample repeatability. One synthetic material exhibited higher flexibility, enabling better adaptation to the sensor and resulting in significantly lower signal attenuation.
KW - Acoustic emission analysis
KW - Coupling material
KW - In vitro investigation
KW - Noninvasive loosening detection
KW - Total hip arthroplasty
UR - http://www.scopus.com/inward/record.url?scp=85215837866&partnerID=8YFLogxK
U2 - 10.1016/j.jmbbm.2025.106905
DO - 10.1016/j.jmbbm.2025.106905
M3 - Article
AN - SCOPUS:85215837866
VL - 164
JO - Journal of the Mechanical Behavior of Biomedical Materials
JF - Journal of the Mechanical Behavior of Biomedical Materials
SN - 1751-6161
M1 - 106905
ER -