Marker placement sensitivity of the Oxford and Rizzoli foot models in adults and children.

Autor: Schallig W; Amsterdam UMC, Vrije Universiteit Amsterdam, Rehabilitation Medicine, Amsterdam Movement Sciences, de Boelelaan 1117, Amsterdam, the Netherlands; Amsterdam UMC, University of Amsterdam, Radiology and Nuclear Medicine, Medical Imaging Quantification Center (MIQC), Amsterdam Movement Sciences, Meibergdreef 9, Amsterdam, the Netherlands. Electronic address: w.schallig@amsterdamumc.nl., van den Noort JC; Amsterdam UMC, University of Amsterdam, Radiology and Nuclear Medicine, Medical Imaging Quantification Center (MIQC), Amsterdam Movement Sciences, Meibergdreef 9, Amsterdam, the Netherlands., Maas M; Amsterdam UMC, University of Amsterdam, Radiology and Nuclear Medicine, Medical Imaging Quantification Center (MIQC), Amsterdam Movement Sciences, Meibergdreef 9, Amsterdam, the Netherlands., Harlaar J; Amsterdam UMC, Vrije Universiteit Amsterdam, Rehabilitation Medicine, Amsterdam Movement Sciences, de Boelelaan 1117, Amsterdam, the Netherlands; Department of Biomechanical Engineering, Delft University of Technology, Delft, the Netherlands; Department of Orthopedics and Sports Medicine, ErasmusMC, Rotterdam, the Netherlands., van der Krogt MM; Amsterdam UMC, Vrije Universiteit Amsterdam, Rehabilitation Medicine, Amsterdam Movement Sciences, de Boelelaan 1117, Amsterdam, the Netherlands.
Jazyk: angličtina
Zdroj: Journal of biomechanics [J Biomech] 2021 Sep 20; Vol. 126, pp. 110629. Date of Electronic Publication: 2021 Jul 12.
DOI: 10.1016/j.jbiomech.2021.110629
Abstrakt: Understanding the effect of individual marker misplacements is important to improve the repeatability and aid to the interpretation of multi-segment foot models like the Oxford and Rizzoli Foot Models (OFM, RFM). Therefore, this study aimed to quantify the effect of controlled anatomical marker misplacement on multi-segment foot kinematics (i.e. marker placement sensitivity) as calculated by OFM and RFM in a range of foot sizes. Ten healthy adults and nine children were included. A combined OFM and RFM marker set was placed on their right foot and a static standing trial was collected. Each marker was replaced ± 10 mm in steps of 1 mm over the three axes of a foot coordinate system. For each replacement the change in segment orientation (tibia, hindfoot, midfoot, forefoot) was calculated with respect to the reference pose in which no markers were replaced. A linear fit was made to calculate the sensitivity of segment orientation to marker misplacement in °/mm. Additionally, the effect of foot size on the sensitivity was determined using linear regressions. For every foot segment of both models, at least one marker had a sensitivity ≥ 1.0°/mm. Highest values were found for the markers at the posterior aspect of the calcaneus in OFM (1.5°/mm) and the basis of the second metatarsal in RFM (1.4°/mm). Foot size had a small effect on 40% of the sensitivity values. This study identified markers of which consistent placement is critical to prevent clinically relevant errors (>5°). For more repeatable multi-segment models, the role of these markers within the models' definitions needs to be reconsidered.
(Copyright © 2021 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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