Quantifying the bearing surface wear of retrieved hip replacements
Accurate quantification of bearing material loss from retrieved metal-on-metal (MOM) hip replacements is key to understanding their failure. Geometric methods are currently the only means of estimating volumetric wear from retrieved implants and numerous contrasting approaches to obtain these measur...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2019-01-01
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| Series: | Biosurface and Biotribology |
| Subjects: | |
| Online Access: | https://digital-library.theiet.org/content/journals/10.1049/bsbt.2018.0034 |
| _version_ | 1818739720174174208 |
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| author | Sean Bergiers Harry Hothi Robin Richards Johann Henckel Alister Hart |
| author_facet | Sean Bergiers Harry Hothi Robin Richards Johann Henckel Alister Hart |
| author_sort | Sean Bergiers |
| collection | DOAJ |
| description | Accurate quantification of bearing material loss from retrieved metal-on-metal (MOM) hip replacements is key to understanding their failure. Geometric methods are currently the only means of estimating volumetric wear from retrieved implants and numerous contrasting approaches to obtain these measures have been published. Data collection strategies have been thoroughly discussed and refined to minimise the effect of error incurring factors; however, there is an opportunity to optimise the current methods of estimating the pre-wear geometry and, therefore, improve the accuracy of wear volume measurements. An automated analysis strategy to quantify volumetric wear is proposed in this study, which utilises the entire bearing surface to determine the implants pristine geometry. This involves the iterative removal of geometrically effected data points to optimise the fit and size of a perfect sphere. Once fitted, this reference geometry is compared with the measured data, in its entirety, to calculate the volume change representative of the quantity of material lost. Improving the reliability of this parameter could influence the care of a million patients that remain with MOM hip implants. Rigorous validation of this method will dominate future work, ensuring that the accuracy and reliability of this approach are sufficient to provide clinically meaningful data. |
| first_indexed | 2024-12-18T01:29:19Z |
| format | Article |
| id | doaj.art-1785a51d0324487ba4c3b4c63bf3bd8f |
| institution | Directory Open Access Journal |
| issn | 2405-4518 |
| language | English |
| last_indexed | 2024-12-18T01:29:19Z |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Biosurface and Biotribology |
| spelling | doaj.art-1785a51d0324487ba4c3b4c63bf3bd8f2022-12-21T21:25:39ZengWileyBiosurface and Biotribology2405-45182019-01-0110.1049/bsbt.2018.0034BSBT.2018.0034Quantifying the bearing surface wear of retrieved hip replacementsSean Bergiers0Harry Hothi1Robin Richards2Johann Henckel3Alister Hart4Institute of Orthopaedics and Musculoskeletal Science, University College London and the Royal National Orthopaedic HospitalInstitute of Orthopaedics and Musculoskeletal Science, University College London and the Royal National Orthopaedic HospitalInstitute of Orthopaedics and Musculoskeletal Science, University College London and the Royal National Orthopaedic HospitalInstitute of Orthopaedics and Musculoskeletal Science, University College London and the Royal National Orthopaedic HospitalInstitute of Orthopaedics and Musculoskeletal Science, University College London and the Royal National Orthopaedic HospitalAccurate quantification of bearing material loss from retrieved metal-on-metal (MOM) hip replacements is key to understanding their failure. Geometric methods are currently the only means of estimating volumetric wear from retrieved implants and numerous contrasting approaches to obtain these measures have been published. Data collection strategies have been thoroughly discussed and refined to minimise the effect of error incurring factors; however, there is an opportunity to optimise the current methods of estimating the pre-wear geometry and, therefore, improve the accuracy of wear volume measurements. An automated analysis strategy to quantify volumetric wear is proposed in this study, which utilises the entire bearing surface to determine the implants pristine geometry. This involves the iterative removal of geometrically effected data points to optimise the fit and size of a perfect sphere. Once fitted, this reference geometry is compared with the measured data, in its entirety, to calculate the volume change representative of the quantity of material lost. Improving the reliability of this parameter could influence the care of a million patients that remain with MOM hip implants. Rigorous validation of this method will dominate future work, ensuring that the accuracy and reliability of this approach are sufficient to provide clinically meaningful data.https://digital-library.theiet.org/content/journals/10.1049/bsbt.2018.0034volume measurementprostheticswearmachine bearingsgeometrybiomedical materialsbiomechanicsbearing surface wearretrieved hip replacementsaccurate quantificationmaterial lossmetal-on-metal hip replacementsgeometric methodsvolumetric wearretrieved implantsnumerous contrasting approachesdata collection strategieserror incurring factorscurrent methodspre-wear geometrywear volume measurementsautomated analysis strategyentire bearing surfaceimplants pristine geometrygeometrically effected data pointsfitsizereference geometryvolume change representativeMOM hip implantsclinically meaningful data |
| spellingShingle | Sean Bergiers Harry Hothi Robin Richards Johann Henckel Alister Hart Quantifying the bearing surface wear of retrieved hip replacements Biosurface and Biotribology volume measurement prosthetics wear machine bearings geometry biomedical materials biomechanics bearing surface wear retrieved hip replacements accurate quantification material loss metal-on-metal hip replacements geometric methods volumetric wear retrieved implants numerous contrasting approaches data collection strategies error incurring factors current methods pre-wear geometry wear volume measurements automated analysis strategy entire bearing surface implants pristine geometry geometrically effected data points fit size reference geometry volume change representative MOM hip implants clinically meaningful data |
| title | Quantifying the bearing surface wear of retrieved hip replacements |
| title_full | Quantifying the bearing surface wear of retrieved hip replacements |
| title_fullStr | Quantifying the bearing surface wear of retrieved hip replacements |
| title_full_unstemmed | Quantifying the bearing surface wear of retrieved hip replacements |
| title_short | Quantifying the bearing surface wear of retrieved hip replacements |
| title_sort | quantifying the bearing surface wear of retrieved hip replacements |
| topic | volume measurement prosthetics wear machine bearings geometry biomedical materials biomechanics bearing surface wear retrieved hip replacements accurate quantification material loss metal-on-metal hip replacements geometric methods volumetric wear retrieved implants numerous contrasting approaches data collection strategies error incurring factors current methods pre-wear geometry wear volume measurements automated analysis strategy entire bearing surface implants pristine geometry geometrically effected data points fit size reference geometry volume change representative MOM hip implants clinically meaningful data |
| url | https://digital-library.theiet.org/content/journals/10.1049/bsbt.2018.0034 |
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