MPC-grafted highly cross-linked polyethylene liners retrieved from short-term total hip arthroplasty: Further evidences for the unsuitability of the MPC method
| Autor: | Elia Marin, Narifumi Kishida, Takashi Hosoi, Giuseppe Pezzotti, Wenliang Zhu, Masahiro Hasegawa, Satoshi Nakasone, Shine Tone, Akihiro Sudo |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Arthroplasty Replacement Hip Phosphorylcholine Biomedical Engineering Infrared spectroscopy 02 engineering and technology Biomaterials 03 medical and health sciences chemistry.chemical_compound X-ray photoelectron spectroscopy Polymethacrylic Acids Bearing surface Materials Testing Humans Surface oxidation Composite material 030304 developmental biology 0303 health sciences Cross-linked polyethylene Polyethylene 021001 nanoscience & nanotechnology chemistry Attenuated total reflection Methacrylates Hip Prosthesis 0210 nano-technology Total hip arthroplasty |
| Zdroj: | Journal of biomedical materials research. Part B, Applied biomaterialsREFERENCES. 108(7) |
| ISSN: | 1552-4981 |
| Popis: | An analysis is presented of four short-term retrieved highly crosslinked polyethylene (HXLPE) hip liners grafted with 2-methacryloyloxyethyl phosphorylcholine (MPC) on their bearing surfaces, which were recently commercialized as a new generation of artificial hip joints. Straightforward evidences by X-ray photoelectron spectroscopy (XPS) confirmed that the MPC layer peeled off on the bearing surface of all short-term liners in both main wear and nonwear zones. Analyses by Fourier-transform infrared spectroscopy with attenuated total reflection assessed the extent of surface oxidation and revealed the type of oxidative species. Electron spin resonance analyses, which compared retrievals and as-received samples, revealed the presence of different species of alkoxyl CO• radicals. This study suggests that MPC grafts on polyethylene do not offer any additional protection from oxidation and can delaminate prematurely after short-term in vivo exposure. |
| Databáze: | OpenAIRE |
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