An energy dissipation and cross shear time dependent computational wear model for the analysis of polyethylene wear in total knee replacements
| Autor: | Sean O'Brien, Martin J. Petrak, Eric Bohm, Jan-M Brandt, Urs P. Wyss |
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| Rok vydání: | 2014 |
| Předmět: |
Materials science
Knee Joint Total knee replacement Biomedical Engineering Biophysics Kinematics Models Biological chemistry.chemical_compound Pressure Forensic engineering Humans Computer Simulation Orthopedics and Sports Medicine Composite material Arthroplasty Replacement Knee Cross shear Rehabilitation Tribology Dissipation Polyethylene Finite element method Biomechanical Phenomena chemistry Knee Prosthesis Reduction (mathematics) human activities |
| Zdroj: | Journal of Biomechanics. 47:1127-1133 |
| ISSN: | 0021-9290 |
| DOI: | 10.1016/j.jbiomech.2013.12.017 |
| Popis: | The cost and time efficiency of computational polyethylene wear simulations may enable the optimization of total knee replacements for the reduction of polyethylene wear. The present study proposes an energy dissipation wear model for polyethylene which considers the time dependent molecular behavior of polyethylene, aspects of tractive rolling and contact pressure. This time dependent - energy dissipation wear model was evaluated, along with several other wear models, by comparison to pin-on-disk results, knee simulator wear test results under various kinematic conditions and knee simulator wear test results that were performed following the ISO 14243-3 standard. The proposed time dependent - energy dissipation wear model resulted in improved accuracy for the prediction of pin-on-disk and knee simulator wear test results compared with several previously published wear models. |
| Databáze: | OpenAIRE |
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