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Improved Resistance to Wear, Delamination and Posterior Loading Fatigue Damage of Electron Beam Irradiated, Melt-Annealed, Highly Crosslinked UHMWPE Knee Inserts

JQ. YaoCR. BlanchardRD. CrowninshieldLN. GilbertsonTS. JohnsonMP. LaurentX. LuDF. Swarts

出版	ASTM International, 2004
URL	http://books.google.com.hk/books?id=8PV5zgEACAAJ&hl=&source=gbs_api

註釋Recently, a knee prosthesis containing an electron beam irradiated (58 - 72 kGy, nominal dose of 65 kGy), melt-annealed, highly crosslinked UHMWPE (HXPE) tibial insert has been developed. In the present study, the wear and delamination resistance of the HXPE tibial insert and its fatigue performance under a posterior loading condition have been evaluated against its conventional gamma-sterilized UHMWPE counterpart (37kGy, in nitrogen). The test methodologies used were newly developed with the aim to evaluate this new material under severe testing conditions.