Laser Resonance Frequency Analysis: A Novel Measurement Approach to Evaluate Acetabular Cup Stability During Surgery.
acetabular cup
finite element method
implant stability
laser
resonance frequency analysis
total hip arthroplasty
Journal
Sensors (Basel, Switzerland)
ISSN: 1424-8220
Titre abrégé: Sensors (Basel)
Pays: Switzerland
ID NLM: 101204366
Informations de publication
Date de publication:
08 Nov 2019
08 Nov 2019
Historique:
received:
18
10
2019
revised:
04
11
2019
accepted:
07
11
2019
entrez:
14
11
2019
pubmed:
14
11
2019
medline:
14
4
2020
Statut:
epublish
Résumé
Artificial joint acetabular cup stability is essential for successful total hip arthroplasty. However, a quantitative evaluation approach for clinical use is lacking. We developed a resonance frequency analysis (RFA) system involving a laser system that is fully contactless. This study aimed to investigate the usefulness of laser RFA for evaluating acetabular cup stability. First, the finite element method was performed to determine the vibration mode for analysis. Second, the acetabular cup was press-fitted into a reamed polyurethane cavity that replicated the human acetabular roof. The implanted acetabular cup was vibrated with pulse laser irradiation and the induced vibration was detected with a laser Doppler vibrometer. The time domain signal from the vibrometer was analyzed by fast Fourier transform to obtain the vibration frequency spectrum. After laser RFA, the pull-down force of the acetabular cup was measured as conventional implant fixation strength. The frequency of the first highest amplitude between 2 kHz and 6 kHz was considered as the resonance peak frequency, and its relationship with the pull-down force was assessed. The peak frequency could predict the pull-down force (
Identifiants
pubmed: 31717400
pii: s19224876
doi: 10.3390/s19224876
pmc: PMC6891423
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
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