Xu J, Cao H, Sesselmann S, Taylor D, Forst R, Seehaus F (2020)
Publication Language: English
Publication Type: Journal article
Publication year: 2020
Book Volume: 10
Pages Range: 1-14
Article Number: 8507
Journal Issue: 23
DOI: 10.3390/app10238507
Elementary Geometrical Shape (EGS) models present an alternative approach to detect in vivo migration of total hip arthroplasty using model-based Roentgen Stereophotogrammetric Analysis (mbRSA). However, its applicability for an irregular-shaped femoral stem and the reliability of this mbRSA approach has not been proven so far. The aim of this study is to assess the effect of multi-rater and an anatomically shaped femoral stem design onto resulting implant to bone migration results. The retrospective analysis included 18 clinical cases of anatomically shaped stem with 10-year RSA follow-ups. Three raters repeatedly measured all RSA follow-ups for evaluating the rater equivalence and intra-rater reliability. The results proved the equivalence between different raters for mbRSA using EGS models (mbRSA-EGS), hence it simplified the investigation of rater reliability to intra-rater reliability. In all in-plane migration measurements, mbRSA-EGS shows good intra-rater reliability and small intra-rater variability (translation: <0.15 mm; rotation: <0.18 deg). However, the reliability is worse in the out-of-plane measurements, especially the cranial-caudal rotation (intra-rater variability: 0.99–1.81 deg). Overall, mbRSA-EGS can be an alternative approach next to surface models while the in-plane migration of femoral stem (e.g. the implant subsidence for loosening prediction) have more research interested than other directions.
APA:
Xu, J., Cao, H., Sesselmann, S., Taylor, D., Forst, R., & Seehaus, F. (2020). Model-based roentgen stereophotogrammetric analysis using elementary geometrical shape models: Reliability of migration measurements for an anatomically shaped femoral stem component. Applied Sciences, 10(23), 1-14. https://doi.org/10.3390/app10238507
MLA:
Xu, Jing, et al. "Model-based roentgen stereophotogrammetric analysis using elementary geometrical shape models: Reliability of migration measurements for an anatomically shaped femoral stem component." Applied Sciences 10.23 (2020): 1-14.
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