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Bearing-Foreign Material Deposition on Retrieved Co-Cr Femoral Heads: Composition and Morphology

Bearing-foreign material deposition onto a femoral head can occur from contact with an acetabular shell due to dislocation, reduction, or subluxation. The purpose of this study was to comprehensively characterize deposit regions on retrieved cobalt-chrome femoral heads from metal-on-polyethylene tot...

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Autores principales: Tikekar, Nishant M., Heiner, Anneliese D., Baer, Thomas E., Kruger, Karen M., Callaghan, John J., Brown, Thomas D., Lannutti, John J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4506823/
https://www.ncbi.nlm.nih.gov/pubmed/26236744
http://dx.doi.org/10.1155/2015/967278
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author Tikekar, Nishant M.
Heiner, Anneliese D.
Baer, Thomas E.
Kruger, Karen M.
Callaghan, John J.
Brown, Thomas D.
Lannutti, John J.
author_facet Tikekar, Nishant M.
Heiner, Anneliese D.
Baer, Thomas E.
Kruger, Karen M.
Callaghan, John J.
Brown, Thomas D.
Lannutti, John J.
author_sort Tikekar, Nishant M.
collection PubMed
description Bearing-foreign material deposition onto a femoral head can occur from contact with an acetabular shell due to dislocation, reduction, or subluxation. The purpose of this study was to comprehensively characterize deposit regions on retrieved cobalt-chrome femoral heads from metal-on-polyethylene total hip arthroplasties that had experienced such adverse events. The morphology, topography, and composition of deposition regions were characterized using macrophotography, optical profilometry, scanning electron microscopy, energy dispersive spectroscopy, and X-ray photoelectron spectroscopy. The deposit areas were relatively large, they were much rougher than the surrounding undamaged clean areas, and they displayed several distinct morphologies. Titanium alloy elements were the predominant constituents. Calcium and phosphorous were also detected within the deposit areas, in a composition that could nucleate abrasive hydroxyapatite. In addition, tungsten-rich particles, likely present as tungsten carbide, were observed on top of the titanium deposits. The increased roughness associated with these deposition features would be expected to accelerate damage and wear of the opposing liner and hence accelerate the development of osteolysis.
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spelling pubmed-45068232015-08-02 Bearing-Foreign Material Deposition on Retrieved Co-Cr Femoral Heads: Composition and Morphology Tikekar, Nishant M. Heiner, Anneliese D. Baer, Thomas E. Kruger, Karen M. Callaghan, John J. Brown, Thomas D. Lannutti, John J. Biomed Res Int Research Article Bearing-foreign material deposition onto a femoral head can occur from contact with an acetabular shell due to dislocation, reduction, or subluxation. The purpose of this study was to comprehensively characterize deposit regions on retrieved cobalt-chrome femoral heads from metal-on-polyethylene total hip arthroplasties that had experienced such adverse events. The morphology, topography, and composition of deposition regions were characterized using macrophotography, optical profilometry, scanning electron microscopy, energy dispersive spectroscopy, and X-ray photoelectron spectroscopy. The deposit areas were relatively large, they were much rougher than the surrounding undamaged clean areas, and they displayed several distinct morphologies. Titanium alloy elements were the predominant constituents. Calcium and phosphorous were also detected within the deposit areas, in a composition that could nucleate abrasive hydroxyapatite. In addition, tungsten-rich particles, likely present as tungsten carbide, were observed on top of the titanium deposits. The increased roughness associated with these deposition features would be expected to accelerate damage and wear of the opposing liner and hence accelerate the development of osteolysis. Hindawi Publishing Corporation 2015 2015-07-05 /pmc/articles/PMC4506823/ /pubmed/26236744 http://dx.doi.org/10.1155/2015/967278 Text en Copyright © 2015 Nishant M. Tikekar et al. https://creativecommons.org/licenses/by/3.0/ 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
Tikekar, Nishant M.
Heiner, Anneliese D.
Baer, Thomas E.
Kruger, Karen M.
Callaghan, John J.
Brown, Thomas D.
Lannutti, John J.
Bearing-Foreign Material Deposition on Retrieved Co-Cr Femoral Heads: Composition and Morphology
title Bearing-Foreign Material Deposition on Retrieved Co-Cr Femoral Heads: Composition and Morphology
title_full Bearing-Foreign Material Deposition on Retrieved Co-Cr Femoral Heads: Composition and Morphology
title_fullStr Bearing-Foreign Material Deposition on Retrieved Co-Cr Femoral Heads: Composition and Morphology
title_full_unstemmed Bearing-Foreign Material Deposition on Retrieved Co-Cr Femoral Heads: Composition and Morphology
title_short Bearing-Foreign Material Deposition on Retrieved Co-Cr Femoral Heads: Composition and Morphology
title_sort bearing-foreign material deposition on retrieved co-cr femoral heads: composition and morphology
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4506823/
https://www.ncbi.nlm.nih.gov/pubmed/26236744
http://dx.doi.org/10.1155/2015/967278
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