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| Titel: |
Effect of sliding locus on subsurface crack formation in ultra-high-molecular-weight polyethylene knee component |
| Auteur: |
Shinichi Todo Naohide Tomita Takahiro Kitakura Yoshiki Yamano |
| Verschenen in: |
Bio-medical materials and engineering |
| Paginering: | Jaargang 9 (2001) nr. 1 pagina's 13-20 |
| Jaar: |
2001-04-01 |
| Inhoud: |
The objective of this study was to evaluate the effect of sliding locus on fatigue destruction of ultra-high-molecular-weight polyethylene (UHMWPE) in order to design a durable total knee arthroplasty (TKA) articulation. Two-dimensional sliding fatigue testing was performed under two simplified patterns of articulating interface sliding locus. Scanning acoustic tomography (SAT) was used for observation of subsurface cracks in UHMWPE specimens. A high rate of subsurface crack formation was observed when the movement was reciprocated on two different loci, in contrast with that on a single linear locus. This finding suggests that crack formation or propagation in UHMWPE components is accelerated not only by the compressive stress but also by complicated articulating movement locus. |
| Uitgever: |
IOS Press |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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