Reduction of wear in total hip replacement prostheses by amorphous diamond coatings
| Autor: | Yrjö T. Konttinen, Seppo Santavirta, Asko Anttila, Reijo Lappalainen, Mikko Selenius |
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| Rok vydání: | 2003 |
| Předmět: |
medicine.medical_specialty
Materials science Surface Properties medicine.medical_treatment Wear debris Biomedical Engineering Aseptic loosening Total hip replacement Periprosthetic Biocompatible Materials 02 engineering and technology In Vitro Techniques Biomaterials 03 medical and health sciences 0302 clinical medicine Materials Testing medicine Humans Composite material Reduction (orthopedic surgery) 030222 orthopedics 021001 nanoscience & nanotechnology Amorphous diamond Surgery Biomechanical Phenomena Prosthesis Failure Equipment Failure Analysis Hip simulator Lubrication Hip Prosthesis Diamond 0210 nano-technology |
| Zdroj: | Journal of biomedical materials research. Part B, Applied biomaterials. 66(1) |
| ISSN: | 1552-4973 |
| Popis: | Wear-debris-induced periprosthetic bone loss and aseptic loosening is regarded as the main long-term problem of total hip replacements (THRs). In this study the amount of wear debris from articulating surfaces of THRs was reduced so as to be close to negligible by the use of high-quality amorphous diamond (AD) coatings deposited by pulsed plasma arc techniques. The wear rates determined in a commercial hip simulator for 15 million walking cycles (corresponding to about 15 years of clinical use) in serum lubrication were even 1,000,000 times lower than the clinical values for conventional THRs (polyethylene-metal or metal-metal pairs). Elimination of wear debris and good biomechanical performance should provide a substantial improvement of the clinical longevity of the THRs. |
| Databáze: | OpenAIRE |
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