Does Pelvic Orientation Influence Wear Measurement of the Acetabular Cup in Total Hip Arthroplasty—An Experimental Study

Roentgen stereophotogrammetric analysis (RSA) is the gold standard to detect in vivo material wear of the bearing couples in hip arthroplasty. Some surgical planning tools offer the opportunity to detect wear by using standard a.p. radiographs (2D<sub>wear</sub>), whilst RSA (3D<sub&g...

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Autores principales:	Junzhe Wu, Dominic Taylor, Raimund Forst, Frank Seehaus
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	polyethylene wear roentgen stereophotogrammetric analysis total hip arthroplasty precision accuracy pelvic orientation Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/4b19bdc45c474884b545414e5b8ec785
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spelling	oai:doaj.org-article:4b19bdc45c474884b545414e5b8ec7852021-11-11T15:05:55ZDoes Pelvic Orientation Influence Wear Measurement of the Acetabular Cup in Total Hip Arthroplasty—An Experimental Study10.3390/app1121100142076-3417https://doaj.org/article/4b19bdc45c474884b545414e5b8ec7852021-10-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/10014https://doaj.org/toc/2076-3417Roentgen stereophotogrammetric analysis (RSA) is the gold standard to detect in vivo material wear of the bearing couples in hip arthroplasty. Some surgical planning tools offer the opportunity to detect wear by using standard a.p. radiographs (2D<sub>wear</sub>), whilst RSA (3D<sub>wear</sub>) needs a special radiological setup. The aims of this study are to prove the interchangeable applicability of a 2D<sub>wear</sub> approach next to RSA and to assess the influence of different pelvic positions on measurement outcomes. An implant-bone model was used to mimic three different wear scenarios in seven pelvic-femur alignment positions. RSA and a.p. radiographs of the reference and a follow-up (simulated wear) pose were acquired. Accuracy and precision were worse for the 2D<sub>wear</sub> approach (0.206 mm; 0.159 mm) in comparison to the 3D<sub>wear</sub> approach (0.043 mm; 0.017 mm). Changing the pelvic position significantly influenced the 2D<sub>wear</sub> results (4 of 7, <i>p</i> < 0.05), whilst 3D<sub>wear</sub> results showed almost no change. The 3D<sub>wear</sub> is superior to the 2D<sub>wear</sub> approach, as it is less susceptible to changes in pelvic position. However, the results suggest that a 2D<sub>wear</sub> approach may be an alternative method if the wear present is in the range of 100–500 µm and a.p. radiographs are available with the pelvis projected in a neutral position.Junzhe WuDominic TaylorRaimund ForstFrank SeehausMDPI AGarticlepolyethylene wearroentgen stereophotogrammetric analysistotal hip arthroplastyprecisionaccuracypelvic orientationTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10014, p 10014 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	polyethylene wear roentgen stereophotogrammetric analysis total hip arthroplasty precision accuracy pelvic orientation Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	polyethylene wear roentgen stereophotogrammetric analysis total hip arthroplasty precision accuracy pelvic orientation Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Junzhe Wu Dominic Taylor Raimund Forst Frank Seehaus Does Pelvic Orientation Influence Wear Measurement of the Acetabular Cup in Total Hip Arthroplasty—An Experimental Study
description	Roentgen stereophotogrammetric analysis (RSA) is the gold standard to detect in vivo material wear of the bearing couples in hip arthroplasty. Some surgical planning tools offer the opportunity to detect wear by using standard a.p. radiographs (2D<sub>wear</sub>), whilst RSA (3D<sub>wear</sub>) needs a special radiological setup. The aims of this study are to prove the interchangeable applicability of a 2D<sub>wear</sub> approach next to RSA and to assess the influence of different pelvic positions on measurement outcomes. An implant-bone model was used to mimic three different wear scenarios in seven pelvic-femur alignment positions. RSA and a.p. radiographs of the reference and a follow-up (simulated wear) pose were acquired. Accuracy and precision were worse for the 2D<sub>wear</sub> approach (0.206 mm; 0.159 mm) in comparison to the 3D<sub>wear</sub> approach (0.043 mm; 0.017 mm). Changing the pelvic position significantly influenced the 2D<sub>wear</sub> results (4 of 7, <i>p</i> < 0.05), whilst 3D<sub>wear</sub> results showed almost no change. The 3D<sub>wear</sub> is superior to the 2D<sub>wear</sub> approach, as it is less susceptible to changes in pelvic position. However, the results suggest that a 2D<sub>wear</sub> approach may be an alternative method if the wear present is in the range of 100–500 µm and a.p. radiographs are available with the pelvis projected in a neutral position.
format	article
author	Junzhe Wu Dominic Taylor Raimund Forst Frank Seehaus
author_facet	Junzhe Wu Dominic Taylor Raimund Forst Frank Seehaus
author_sort	Junzhe Wu
title	Does Pelvic Orientation Influence Wear Measurement of the Acetabular Cup in Total Hip Arthroplasty—An Experimental Study
title_short	Does Pelvic Orientation Influence Wear Measurement of the Acetabular Cup in Total Hip Arthroplasty—An Experimental Study
title_full	Does Pelvic Orientation Influence Wear Measurement of the Acetabular Cup in Total Hip Arthroplasty—An Experimental Study
title_fullStr	Does Pelvic Orientation Influence Wear Measurement of the Acetabular Cup in Total Hip Arthroplasty—An Experimental Study
title_full_unstemmed	Does Pelvic Orientation Influence Wear Measurement of the Acetabular Cup in Total Hip Arthroplasty—An Experimental Study
title_sort	does pelvic orientation influence wear measurement of the acetabular cup in total hip arthroplasty—an experimental study
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/4b19bdc45c474884b545414e5b8ec785
work_keys_str_mv	AT junzhewu doespelvicorientationinfluencewearmeasurementoftheacetabularcupintotalhiparthroplastyanexperimentalstudy AT dominictaylor doespelvicorientationinfluencewearmeasurementoftheacetabularcupintotalhiparthroplastyanexperimentalstudy AT raimundforst doespelvicorientationinfluencewearmeasurementoftheacetabularcupintotalhiparthroplastyanexperimentalstudy AT frankseehaus doespelvicorientationinfluencewearmeasurementoftheacetabularcupintotalhiparthroplastyanexperimentalstudy
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Does Pelvic Orientation Influence Wear Measurement of the Acetabular Cup in Total Hip Arthroplasty—An Experimental Study

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