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Analysis of Carbon Fiber Reinforced PEEK Hinge Mechanism Articulation Components in a Rotating Hinge Knee Design: A Comparison of In Vitro and Retrieval Findings

Carbon fiber reinforced poly-ether-ether-ketone (CFR-PEEK) represents a promising alternative material for bushings in total knee replacements, after early clinical failures of polyethylene in this application. The objective of the present study was to evaluate the damage modes and the extent of dam...

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Autores principales: Schierjott, Ronja A., Giurea, Alexander, Neuhaus, Hans-Joachim, Schwiesau, Jens, Pfaff, Andreas M., Utzschneider, Sandra, Tozzi, Gianluca, Grupp, Thomas M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5213741/
https://www.ncbi.nlm.nih.gov/pubmed/28101512
http://dx.doi.org/10.1155/2016/7032830
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author Schierjott, Ronja A.
Giurea, Alexander
Neuhaus, Hans-Joachim
Schwiesau, Jens
Pfaff, Andreas M.
Utzschneider, Sandra
Tozzi, Gianluca
Grupp, Thomas M.
author_facet Schierjott, Ronja A.
Giurea, Alexander
Neuhaus, Hans-Joachim
Schwiesau, Jens
Pfaff, Andreas M.
Utzschneider, Sandra
Tozzi, Gianluca
Grupp, Thomas M.
author_sort Schierjott, Ronja A.
collection PubMed
description Carbon fiber reinforced poly-ether-ether-ketone (CFR-PEEK) represents a promising alternative material for bushings in total knee replacements, after early clinical failures of polyethylene in this application. The objective of the present study was to evaluate the damage modes and the extent of damage observed on CFR-PEEK hinge mechanism articulation components after in vivo service in a rotating hinge knee (RHK) system and to compare the results with corresponding components subjected to in vitro wear tests. Key question was if there were any similarities or differences between in vivo and in vitro damage characteristics. Twelve retrieved RHK systems after an average of 34.9 months in vivo underwent wear damage analysis with focus on the four integrated CFR-PEEK components and distinction between different damage modes and classification with a scoring system. The analysis included visual examination, scanning electron microscopy, and energy dispersive X-ray spectroscopy, as well as surface roughness and profile measurements. The main wear damage modes were comparable between retrieved and in vitro specimens (n = 3), whereby the size of affected area on the retrieved components showed a higher variation. Overall, the retrieved specimens seemed to be slightly heavier damaged which was probably attributable to the more complex loading and kinematic conditions in vivo.
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spelling pubmed-52137412017-01-18 Analysis of Carbon Fiber Reinforced PEEK Hinge Mechanism Articulation Components in a Rotating Hinge Knee Design: A Comparison of In Vitro and Retrieval Findings Schierjott, Ronja A. Giurea, Alexander Neuhaus, Hans-Joachim Schwiesau, Jens Pfaff, Andreas M. Utzschneider, Sandra Tozzi, Gianluca Grupp, Thomas M. Biomed Res Int Research Article Carbon fiber reinforced poly-ether-ether-ketone (CFR-PEEK) represents a promising alternative material for bushings in total knee replacements, after early clinical failures of polyethylene in this application. The objective of the present study was to evaluate the damage modes and the extent of damage observed on CFR-PEEK hinge mechanism articulation components after in vivo service in a rotating hinge knee (RHK) system and to compare the results with corresponding components subjected to in vitro wear tests. Key question was if there were any similarities or differences between in vivo and in vitro damage characteristics. Twelve retrieved RHK systems after an average of 34.9 months in vivo underwent wear damage analysis with focus on the four integrated CFR-PEEK components and distinction between different damage modes and classification with a scoring system. The analysis included visual examination, scanning electron microscopy, and energy dispersive X-ray spectroscopy, as well as surface roughness and profile measurements. The main wear damage modes were comparable between retrieved and in vitro specimens (n = 3), whereby the size of affected area on the retrieved components showed a higher variation. Overall, the retrieved specimens seemed to be slightly heavier damaged which was probably attributable to the more complex loading and kinematic conditions in vivo. Hindawi Publishing Corporation 2016 2016-12-22 /pmc/articles/PMC5213741/ /pubmed/28101512 http://dx.doi.org/10.1155/2016/7032830 Text en Copyright © 2016 Ronja A. Schierjott et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Schierjott, Ronja A.
Giurea, Alexander
Neuhaus, Hans-Joachim
Schwiesau, Jens
Pfaff, Andreas M.
Utzschneider, Sandra
Tozzi, Gianluca
Grupp, Thomas M.
Analysis of Carbon Fiber Reinforced PEEK Hinge Mechanism Articulation Components in a Rotating Hinge Knee Design: A Comparison of In Vitro and Retrieval Findings
title Analysis of Carbon Fiber Reinforced PEEK Hinge Mechanism Articulation Components in a Rotating Hinge Knee Design: A Comparison of In Vitro and Retrieval Findings
title_full Analysis of Carbon Fiber Reinforced PEEK Hinge Mechanism Articulation Components in a Rotating Hinge Knee Design: A Comparison of In Vitro and Retrieval Findings
title_fullStr Analysis of Carbon Fiber Reinforced PEEK Hinge Mechanism Articulation Components in a Rotating Hinge Knee Design: A Comparison of In Vitro and Retrieval Findings
title_full_unstemmed Analysis of Carbon Fiber Reinforced PEEK Hinge Mechanism Articulation Components in a Rotating Hinge Knee Design: A Comparison of In Vitro and Retrieval Findings
title_short Analysis of Carbon Fiber Reinforced PEEK Hinge Mechanism Articulation Components in a Rotating Hinge Knee Design: A Comparison of In Vitro and Retrieval Findings
title_sort analysis of carbon fiber reinforced peek hinge mechanism articulation components in a rotating hinge knee design: a comparison of in vitro and retrieval findings
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5213741/
https://www.ncbi.nlm.nih.gov/pubmed/28101512
http://dx.doi.org/10.1155/2016/7032830
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