Delamination wear on two retrieved polyethylene inserts after gamma sterilization in nitrogen

Abstract Two self-aligning mobile bearing knee replacements (SAL-1) with gamma-in-nitrogen sterilized polyethylene inserts were revised due to instability after 6.3 years and after 14.2 years in vivo in two patients. The predominant damage features were burnishing, cracking, and delamination and wer...

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