ECiMa™ for Low Wear, Optimal Mechanical Properties and Oxidation Resistance of Hip Bearings

  • Alison TraynorEmail author
  • David Simpson
  • Simon Collins


Peri-prosthetic osteolysis, secondary to wear, is a limitation of conventional UHMWPE. Highly cross-linked polyethylene (HXLPE) materials were introduced to overcome these limitations; however, there are still concerns with regard to material property degradation and oxidation. ECiMa is a cold-irradiated, mechanically annealed, vitamin-E-blended HXLPE developed to maintain mechanical properties, minimise wear and improve long-term oxidation resistance. This chapter reports on the in vitro testing that has been completed for ECiMa. The material has demonstrated a reduced wear rate during in vitro hip simulation when compared to conventional UHMWPE, and improved mechanical properties and long-term oxidation resistance in comparison to HXLPE. This makes ECiMa a promising next-generation bearing material.


Wear Rate Oxidation Resistance Fatigue Crack Propagation Total Joint Replacement Free Radical Scavenge Ability 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© EFORT 2012

Authors and Affiliations

  1. 1.Technical DepartmentCorin Ltd, Corinium CentreCirencesterUK

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