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Failure Mode Analysis of an Exeter Stem Fracture Initiated at the Introducer Hole: Time for a Design Change?
The fracturing of a hip prosthesis stem at its neck, in the absence of a trauma, is an extremely rare but serious adverse event. The patient in our case was young, active, and tall, thereby putting high mechanical loads on the prosthesis. Radiographs of the initial procedure and blood and synovium a...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8551419/ https://www.ncbi.nlm.nih.gov/pubmed/34746345 http://dx.doi.org/10.1016/j.artd.2021.07.016 |
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author | Jeuken, Ralph M. Fransz, Duncan P. Geers, Marc G.D. van Maris, Marc P.F.H.L. ten Broeke, René H.M. |
author_facet | Jeuken, Ralph M. Fransz, Duncan P. Geers, Marc G.D. van Maris, Marc P.F.H.L. ten Broeke, René H.M. |
author_sort | Jeuken, Ralph M. |
collection | PubMed |
description | The fracturing of a hip prosthesis stem at its neck, in the absence of a trauma, is an extremely rare but serious adverse event. The patient in our case was young, active, and tall, thereby putting high mechanical loads on the prosthesis. Radiographs of the initial procedure and blood and synovium analysis showed no abnormalities. Analysis of the stem revealed niobium-rich precipitates, that is, alloy artifacts, at the introducer stud hole. The mechanically vulnerable location of the introducer stud hole, combined with alloy artifacts at that location and high mechanical stress, ultimately led to failure of the prosthesis. As younger and heavier patients will demand hip arthroplasty in the future, simple stem design adaptations should be considered to prevent stem fractures at the introducer stud hole. |
format | Online Article Text |
id | pubmed-8551419 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-85514192021-11-04 Failure Mode Analysis of an Exeter Stem Fracture Initiated at the Introducer Hole: Time for a Design Change? Jeuken, Ralph M. Fransz, Duncan P. Geers, Marc G.D. van Maris, Marc P.F.H.L. ten Broeke, René H.M. Arthroplast Today Case Report The fracturing of a hip prosthesis stem at its neck, in the absence of a trauma, is an extremely rare but serious adverse event. The patient in our case was young, active, and tall, thereby putting high mechanical loads on the prosthesis. Radiographs of the initial procedure and blood and synovium analysis showed no abnormalities. Analysis of the stem revealed niobium-rich precipitates, that is, alloy artifacts, at the introducer stud hole. The mechanically vulnerable location of the introducer stud hole, combined with alloy artifacts at that location and high mechanical stress, ultimately led to failure of the prosthesis. As younger and heavier patients will demand hip arthroplasty in the future, simple stem design adaptations should be considered to prevent stem fractures at the introducer stud hole. Elsevier 2021-10-04 /pmc/articles/PMC8551419/ /pubmed/34746345 http://dx.doi.org/10.1016/j.artd.2021.07.016 Text en © 2021 The Authors https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Case Report Jeuken, Ralph M. Fransz, Duncan P. Geers, Marc G.D. van Maris, Marc P.F.H.L. ten Broeke, René H.M. Failure Mode Analysis of an Exeter Stem Fracture Initiated at the Introducer Hole: Time for a Design Change? |
title | Failure Mode Analysis of an Exeter Stem Fracture Initiated at the Introducer Hole: Time for a Design Change? |
title_full | Failure Mode Analysis of an Exeter Stem Fracture Initiated at the Introducer Hole: Time for a Design Change? |
title_fullStr | Failure Mode Analysis of an Exeter Stem Fracture Initiated at the Introducer Hole: Time for a Design Change? |
title_full_unstemmed | Failure Mode Analysis of an Exeter Stem Fracture Initiated at the Introducer Hole: Time for a Design Change? |
title_short | Failure Mode Analysis of an Exeter Stem Fracture Initiated at the Introducer Hole: Time for a Design Change? |
title_sort | failure mode analysis of an exeter stem fracture initiated at the introducer hole: time for a design change? |
topic | Case Report |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8551419/ https://www.ncbi.nlm.nih.gov/pubmed/34746345 http://dx.doi.org/10.1016/j.artd.2021.07.016 |
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