A prosthetic bearing element having a bearing surface is made from an ultra-high molecular weight polyethylene with a molecular weight greater than 1,000,000 with a multi-axially molecular orientation. From tests which have been applied to such material, it has been found that the wear rate is lowered...http://www.google.co.uk/patents/US6146426?utm_source=gb-gplus-sharePatent US6146426 - Prosthetic polyethylene bearing having enhanced wear properties
