E
Edward R. Valstar
Researcher at Leiden University Medical Center
Publications - 142
Citations - 5001
Edward R. Valstar is an academic researcher from Leiden University Medical Center. The author has contributed to research in topics: Arthroplasty & Radiostereometric Analysis. The author has an hindex of 36, co-authored 142 publications receiving 4505 citations. Previous affiliations of Edward R. Valstar include Loyola University Medical Center & Delft University of Technology.
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Journal ArticleDOI
Guidelines for standardization of radiostereometry (RSA) of implants
TL;DR: 6 research centers have agreed upon standards for terminology, description and use of RSA arrangement including radiographic set-up and techniques, which will form the basis of a detailed standardization protocol under supervision of ISO and the European Standards Working Group on Joint Replacement Implants.
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A new model-based RSA method validated using CAD models and models from reversed engineering.
TL;DR: A model-based RSA algorithm is presented and validated in phantom experiments and it is demonstrated that the RE models provide more accurate results than the CAD models.
Journal ArticleDOI
Early migration of tibial components is associated with late revision: A systematic review and meta-analysis of 21,000 knee arthroplasties
Bart G Pijls,Edward R. Valstar,Klaas-Auke Nouta,Josepha W.M. Plevier,Marta Fiocco,Saskia Middeldorp,Rob G H H Nelissen +6 more
TL;DR: The proposed migration thresholds can be implemented in a phased, evidence-based introduction of new types of knee prostheses, since they allow early detection of high-risk TKPs while exposing only a small number of patients.
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The history and future of radiostereometric analysis.
TL;DR: Improvements in the technical accuracy and type of kinematic analyses possible have been relatively modest, but radiostereometric analysis is now easier and less time consuming to use, with a resolution in clinical practice almost equal to what could only previously be obtained under ideal laboratory conditions.
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Model-based Roentgen stereophotogrammetry of orthopaedic implants.
TL;DR: The accuracy of the current model-based RSA method is sensitive to dimensional tolerances of the implant, and research is now being conducted to make model- based RSA less sensitive todimensional tolerances and thereby improving its accuracy.