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Fatigue fracture of a cemented Omnifit CoCr femoral stem: implant and failure analysis
A cemented, cast CoCr alloy, Omnifit Plus femoral stem was retrieved following mid-stem fracture after 24 years in vivo. The patient was an active 55-year-old male with a high body mass index (31.3) and no traumatic incidents before stem fracture. Fractographic and fatigue-based failure analyses wer...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5712028/ https://www.ncbi.nlm.nih.gov/pubmed/29204487 http://dx.doi.org/10.1016/j.artd.2017.06.005 |
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author | Bonnheim, Noah Gramling, Hannah Ries, Michael Shukla, Sanjai Iliescu, Beatrice Pruitt, Lisa |
author_facet | Bonnheim, Noah Gramling, Hannah Ries, Michael Shukla, Sanjai Iliescu, Beatrice Pruitt, Lisa |
author_sort | Bonnheim, Noah |
collection | PubMed |
description | A cemented, cast CoCr alloy, Omnifit Plus femoral stem was retrieved following mid-stem fracture after 24 years in vivo. The patient was an active 55-year-old male with a high body mass index (31.3) and no traumatic incidents before stem fracture. Fractographic and fatigue-based failure analyses were performed to illuminate the etiology of fracture and retrospectively predict the device lifetime. The fracture surfaces show evidence of a coarse grain microstructure, intergranular fracture, and regions of porosity. The failure analysis suggests that stems with similar metallurgical characteristics, biomechanical environments, and in vivo durations may be abutting their functioning lifetimes, raising the possibility of an increased revision burden. |
format | Online Article Text |
id | pubmed-5712028 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-57120282017-12-04 Fatigue fracture of a cemented Omnifit CoCr femoral stem: implant and failure analysis Bonnheim, Noah Gramling, Hannah Ries, Michael Shukla, Sanjai Iliescu, Beatrice Pruitt, Lisa Arthroplast Today Case Report A cemented, cast CoCr alloy, Omnifit Plus femoral stem was retrieved following mid-stem fracture after 24 years in vivo. The patient was an active 55-year-old male with a high body mass index (31.3) and no traumatic incidents before stem fracture. Fractographic and fatigue-based failure analyses were performed to illuminate the etiology of fracture and retrospectively predict the device lifetime. The fracture surfaces show evidence of a coarse grain microstructure, intergranular fracture, and regions of porosity. The failure analysis suggests that stems with similar metallurgical characteristics, biomechanical environments, and in vivo durations may be abutting their functioning lifetimes, raising the possibility of an increased revision burden. Elsevier 2017-08-02 /pmc/articles/PMC5712028/ /pubmed/29204487 http://dx.doi.org/10.1016/j.artd.2017.06.005 Text en © 2017 The Authors http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Case Report Bonnheim, Noah Gramling, Hannah Ries, Michael Shukla, Sanjai Iliescu, Beatrice Pruitt, Lisa Fatigue fracture of a cemented Omnifit CoCr femoral stem: implant and failure analysis |
title | Fatigue fracture of a cemented Omnifit CoCr femoral stem: implant and failure analysis |
title_full | Fatigue fracture of a cemented Omnifit CoCr femoral stem: implant and failure analysis |
title_fullStr | Fatigue fracture of a cemented Omnifit CoCr femoral stem: implant and failure analysis |
title_full_unstemmed | Fatigue fracture of a cemented Omnifit CoCr femoral stem: implant and failure analysis |
title_short | Fatigue fracture of a cemented Omnifit CoCr femoral stem: implant and failure analysis |
title_sort | fatigue fracture of a cemented omnifit cocr femoral stem: implant and failure analysis |
topic | Case Report |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5712028/ https://www.ncbi.nlm.nih.gov/pubmed/29204487 http://dx.doi.org/10.1016/j.artd.2017.06.005 |
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