Hard-on-hard lubrication in the artificial hip under dynamic loading conditions.
The tribological performance of an artificial hip joint has a particularly strong influence on its success. The principle causes for failure are adverse short- and long-term reactions to wear debris and high frictional torque in the case of poor lubrication that may cause loosening of the implant. T...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2013-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC3737097?pdf=render |
| _version_ | 1817983727677997056 |
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| author | Robert Sonntag Jörn Reinders Johannes S Rieger Daniel W W Heitzmann J Philippe Kretzer |
| author_facet | Robert Sonntag Jörn Reinders Johannes S Rieger Daniel W W Heitzmann J Philippe Kretzer |
| author_sort | Robert Sonntag |
| collection | DOAJ |
| description | The tribological performance of an artificial hip joint has a particularly strong influence on its success. The principle causes for failure are adverse short- and long-term reactions to wear debris and high frictional torque in the case of poor lubrication that may cause loosening of the implant. Therefore, using experimental and theoretical approaches models have been developed to evaluate lubrication under standardized conditions. A steady-state numerical model has been extended with dynamic experimental data for hard-on-hard bearings used in total hip replacements to verify the tribological relevance of the ISO 14242-1 gait cycle in comparison to experimental data from the Orthoload database and instrumented gait analysis for three additional loading conditions: normal walking, climbing stairs and descending stairs. Ceramic-on-ceramic bearing partners show superior lubrication potential compared to hard-on-hard bearings that work with at least one articulating metal component. Lubrication regimes during the investigated activities are shown to strongly depend on the kinematics and loading conditions. The outcome from the ISO gait is not fully confirmed by the normal walking data and more challenging conditions show evidence of inferior lubrication. These findings may help to explain the differences between the in vitro predictions using the ISO gait cycle and the clinical outcome of some hard-on-hard bearings, e.g., using metal-on-metal. |
| first_indexed | 2024-04-13T23:36:46Z |
| format | Article |
| id | doaj.art-06ce50c431fd451dace01208b4c3951a |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-04-13T23:36:46Z |
| publishDate | 2013-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-06ce50c431fd451dace01208b4c3951a2022-12-22T02:24:42ZengPublic Library of Science (PLoS)PLoS ONE1932-62032013-01-0188e7162210.1371/journal.pone.0071622Hard-on-hard lubrication in the artificial hip under dynamic loading conditions.Robert SonntagJörn ReindersJohannes S RiegerDaniel W W HeitzmannJ Philippe KretzerThe tribological performance of an artificial hip joint has a particularly strong influence on its success. The principle causes for failure are adverse short- and long-term reactions to wear debris and high frictional torque in the case of poor lubrication that may cause loosening of the implant. Therefore, using experimental and theoretical approaches models have been developed to evaluate lubrication under standardized conditions. A steady-state numerical model has been extended with dynamic experimental data for hard-on-hard bearings used in total hip replacements to verify the tribological relevance of the ISO 14242-1 gait cycle in comparison to experimental data from the Orthoload database and instrumented gait analysis for three additional loading conditions: normal walking, climbing stairs and descending stairs. Ceramic-on-ceramic bearing partners show superior lubrication potential compared to hard-on-hard bearings that work with at least one articulating metal component. Lubrication regimes during the investigated activities are shown to strongly depend on the kinematics and loading conditions. The outcome from the ISO gait is not fully confirmed by the normal walking data and more challenging conditions show evidence of inferior lubrication. These findings may help to explain the differences between the in vitro predictions using the ISO gait cycle and the clinical outcome of some hard-on-hard bearings, e.g., using metal-on-metal.http://europepmc.org/articles/PMC3737097?pdf=render |
| spellingShingle | Robert Sonntag Jörn Reinders Johannes S Rieger Daniel W W Heitzmann J Philippe Kretzer Hard-on-hard lubrication in the artificial hip under dynamic loading conditions. PLoS ONE |
| title | Hard-on-hard lubrication in the artificial hip under dynamic loading conditions. |
| title_full | Hard-on-hard lubrication in the artificial hip under dynamic loading conditions. |
| title_fullStr | Hard-on-hard lubrication in the artificial hip under dynamic loading conditions. |
| title_full_unstemmed | Hard-on-hard lubrication in the artificial hip under dynamic loading conditions. |
| title_short | Hard-on-hard lubrication in the artificial hip under dynamic loading conditions. |
| title_sort | hard on hard lubrication in the artificial hip under dynamic loading conditions |
| url | http://europepmc.org/articles/PMC3737097?pdf=render |
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