Reflection effects during the radiation sterilization of ultra high molecular weight polyethylene for total knee replacements

2015 ◽  
Vol 48 ◽  
pp. 46-50 ◽  
Author(s):  
Declan Barron ◽  
Colin Birkinshaw ◽  
Maurice N Collins
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Radiation Sterilization ◽  
Total Knee Replacements ◽  
Knee Replacements ◽  
Total Knee ◽  
Ultra High Molecular Weight

The Wear of UHMWPE in Total Knee Replacements: Experimental and Finite Element Analysis of Contact Behaviour

2001 ◽  
Author(s):  
Dorothy M. Murphy ◽  
Alan Kavanagh ◽  
Tim M. McGloughlin
Keyword(s):  
Molecular Weight ◽  
Finite Element Analysis ◽  
Element Analysis ◽  
Total Knee Replacements ◽  
Total Hip Replacements ◽  
Contact Behaviour ◽  
Knee Replacements ◽  
Hip Replacements ◽  
Total Knee ◽  
Ultra High Molecular Weight

Abstract Upon examination of failed total knee replacements, it has been concluded that it is the performance of the ultra high molecular weight polyethylene (UHMWPE) tibial component that governs the useful lifespan of such a joint. Severe wear of UHMWPE is associated more with tibial components of the knee than with the acetabular cups of total hip replacements. This is due to a notable lack of congruity between the articulating surfaces which leads to the presence of significant localised stresses in the femoro-tibial interface.

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