A hip joint simulator study using simplified loading and motion cycles generating physiological wear paths and rates
| Autor: | John Fisher, M H Stone, P.S.M. Barbour |
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| Rok vydání: | 1999 |
| Předmět: |
Engineering drawing
Engineering Offset (computer science) Chirurgie orthopedique 0206 medical engineering Total hip replacement 02 engineering and technology Load vector Lower limb Motion 03 medical and health sciences 0302 clinical medicine Materials Testing Humans Simulation Analysis of Variance 030222 orthopedics business.industry Mechanical Engineering Hip joint simulator General Medicine Stainless Steel 020601 biomedical engineering Biomechanical Phenomena Prosthesis Failure Chromium Alloys Hip Prosthesis Zirconium Polyethylenes business Motion study Wear simulator |
| Zdroj: | Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine. 213:455-467 |
| ISSN: | 2041-3033 0954-4119 |
| Popis: | In some designs of hip joint simulator the cost of building a highly complex machine has been offset with the requirement for a large number of test stations. The application of the wear results generated by these machines depends on their ability to reproduce physiological wear rates and processes. In this study a hip joint simulator has been shown to reproduce physiological wear using only one load vector and two degrees of motion with simplified input cycles. The actual path of points on the femoral head relative to the acetabular cup were calculated and compared for physiological and simplified input cycles. The in vitro wear rates were found to be highly dependent on the shape of these paths and similarities could be drawn between the shape of the physiological paths and the simplified elliptical paths. |
| Databáze: | OpenAIRE |
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