Amorphous Carbon Coatings for Total Knee Replacements—Part II: Tribological Behavior
Diamond-like carbon coatings may decrease implant wear, therefore, they are helping to reduce aseptic loosening and increase service life of total knee arthroplasties (TKAs). This two-part study addresses the development of such coatings for ultrahigh molecular weight polyethylene (UHMWPE) tibial in...
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| Format: | Article |
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MDPI AG
2021-06-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/13/11/1880 |
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| author | Benedict Rothammer Max Marian Kevin Neusser Marcel Bartz Thomas Böhm Sebastian Krauß Stefan Schroeder Maximilian Uhler Simon Thiele Benoit Merle Jan Philippe Kretzer Sandro Wartzack |
| author_facet | Benedict Rothammer Max Marian Kevin Neusser Marcel Bartz Thomas Böhm Sebastian Krauß Stefan Schroeder Maximilian Uhler Simon Thiele Benoit Merle Jan Philippe Kretzer Sandro Wartzack |
| author_sort | Benedict Rothammer |
| collection | DOAJ |
| description | Diamond-like carbon coatings may decrease implant wear, therefore, they are helping to reduce aseptic loosening and increase service life of total knee arthroplasties (TKAs). This two-part study addresses the development of such coatings for ultrahigh molecular weight polyethylene (UHMWPE) tibial inlays as well as cobalt-chromium-molybdenum (CoCr) and titanium (Ti64) alloy femoral components. While the deposition of a pure (a-C:H) and tungsten-doped hydrogen-containing amorphous carbon coating (a-C:H:W) as well as the detailed characterization of mechanical and adhesion properties were the subject of Part I, the tribological behavior is studied in Part II. Pin-on-disk tests are performed under artificial synovial fluid lubrication. Numerical elastohydrodynamic lubrication modeling is used to show the representability of contact conditions for TKAs and to assess the influence of coatings on lubrication conditions. The wear behavior is characterized by means of light and laser scanning microscopy, Raman spectroscopy, scanning electron microscopy and particle analyses. Although the coating leads to an increase in friction due to the considerably higher roughness, especially the UHMWPE wear is significantly reduced up to a factor of 49% (CoCr) and 77% (Ti64). Thereby, the coating shows continuous wear and no sudden failure or spallation of larger wear particles. This demonstrated the great potential of amorphous carbon coatings for knee replacements. |
| first_indexed | 2024-03-10T10:41:06Z |
| format | Article |
| id | doaj.art-7c1cebab448747c78eca8267ff65f3eb |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T10:41:06Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-7c1cebab448747c78eca8267ff65f3eb2023-11-21T22:57:09ZengMDPI AGPolymers2073-43602021-06-011311188010.3390/polym13111880Amorphous Carbon Coatings for Total Knee Replacements—Part II: Tribological BehaviorBenedict Rothammer0Max Marian1Kevin Neusser2Marcel Bartz3Thomas Böhm4Sebastian Krauß5Stefan Schroeder6Maximilian Uhler7Simon Thiele8Benoit Merle9Jan Philippe Kretzer10Sandro Wartzack11Engineering Design, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Martensstr. 9, 91058 Erlangen, GermanyEngineering Design, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Martensstr. 9, 91058 Erlangen, GermanyEngineering Design, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Martensstr. 9, 91058 Erlangen, GermanyEngineering Design, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Martensstr. 9, 91058 Erlangen, GermanyForschungszentrum Jülich GmbH, Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy, Cauerstr. 1, 91058 Erlangen, GermanyDepartment of Materials Science & Engineering, Interdisciplinary Center for Nanostructured Films (IZNF) Institute I, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Cauerstr. 3, 91058 Erlangen, GermanyLaboratory of Biomechanics and Implant Research, Clinic for Orthopedics and Trauma Surgery, Heidelberg University Hospital, Schlierbacher Landstr. 200a, 69118 Heidelberg, GermanyLaboratory of Biomechanics and Implant Research, Clinic for Orthopedics and Trauma Surgery, Heidelberg University Hospital, Schlierbacher Landstr. 200a, 69118 Heidelberg, GermanyForschungszentrum Jülich GmbH, Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy, Cauerstr. 1, 91058 Erlangen, GermanyDepartment of Materials Science & Engineering, Interdisciplinary Center for Nanostructured Films (IZNF) Institute I, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Cauerstr. 3, 91058 Erlangen, GermanyLaboratory of Biomechanics and Implant Research, Clinic for Orthopedics and Trauma Surgery, Heidelberg University Hospital, Schlierbacher Landstr. 200a, 69118 Heidelberg, GermanyEngineering Design, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Martensstr. 9, 91058 Erlangen, GermanyDiamond-like carbon coatings may decrease implant wear, therefore, they are helping to reduce aseptic loosening and increase service life of total knee arthroplasties (TKAs). This two-part study addresses the development of such coatings for ultrahigh molecular weight polyethylene (UHMWPE) tibial inlays as well as cobalt-chromium-molybdenum (CoCr) and titanium (Ti64) alloy femoral components. While the deposition of a pure (a-C:H) and tungsten-doped hydrogen-containing amorphous carbon coating (a-C:H:W) as well as the detailed characterization of mechanical and adhesion properties were the subject of Part I, the tribological behavior is studied in Part II. Pin-on-disk tests are performed under artificial synovial fluid lubrication. Numerical elastohydrodynamic lubrication modeling is used to show the representability of contact conditions for TKAs and to assess the influence of coatings on lubrication conditions. The wear behavior is characterized by means of light and laser scanning microscopy, Raman spectroscopy, scanning electron microscopy and particle analyses. Although the coating leads to an increase in friction due to the considerably higher roughness, especially the UHMWPE wear is significantly reduced up to a factor of 49% (CoCr) and 77% (Ti64). Thereby, the coating shows continuous wear and no sudden failure or spallation of larger wear particles. This demonstrated the great potential of amorphous carbon coatings for knee replacements.https://www.mdpi.com/2073-4360/13/11/1880DLC coatingbiomedical applicationsbiotribologyUHMWPECoCrTi64 |
| spellingShingle | Benedict Rothammer Max Marian Kevin Neusser Marcel Bartz Thomas Böhm Sebastian Krauß Stefan Schroeder Maximilian Uhler Simon Thiele Benoit Merle Jan Philippe Kretzer Sandro Wartzack Amorphous Carbon Coatings for Total Knee Replacements—Part II: Tribological Behavior Polymers DLC coating biomedical applications biotribology UHMWPE CoCr Ti64 |
| title | Amorphous Carbon Coatings for Total Knee Replacements—Part II: Tribological Behavior |
| title_full | Amorphous Carbon Coatings for Total Knee Replacements—Part II: Tribological Behavior |
| title_fullStr | Amorphous Carbon Coatings for Total Knee Replacements—Part II: Tribological Behavior |
| title_full_unstemmed | Amorphous Carbon Coatings for Total Knee Replacements—Part II: Tribological Behavior |
| title_short | Amorphous Carbon Coatings for Total Knee Replacements—Part II: Tribological Behavior |
| title_sort | amorphous carbon coatings for total knee replacements part ii tribological behavior |
| topic | DLC coating biomedical applications biotribology UHMWPE CoCr Ti64 |
| url | https://www.mdpi.com/2073-4360/13/11/1880 |
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