TY - GEN
T1 - Evaluation of wear resistance of cross-linked ultra-high molecular weight polyethylene for joint prostheses in the multi-directional pin-on-plate apparatus
AU - Sawano, T.
AU - Murakami, T.
AU - Sawae, Y.
PY - 2005
Y1 - 2005
N2 - Gamma irradiation is used as a sterilization method for joint prosthesis. For this procedure, gamma irradiation causes crosslinking of UHMWPE. Crosslinked UHMWPE molecules connect each other strongly. However gamma irradiation causes the reduction in mechanical properties such as tensile strength and elongation because primary chain scission occurrs. Therefore, excessive irradiation would cause some problems. We suggest the existence of the optimum dose for minimum wear and moderate reduction in tensile strength and elongation. Furthermore we indicate a mechanism of wear resistance of gamma irradiated UHMWPE.
AB - Gamma irradiation is used as a sterilization method for joint prosthesis. For this procedure, gamma irradiation causes crosslinking of UHMWPE. Crosslinked UHMWPE molecules connect each other strongly. However gamma irradiation causes the reduction in mechanical properties such as tensile strength and elongation because primary chain scission occurrs. Therefore, excessive irradiation would cause some problems. We suggest the existence of the optimum dose for minimum wear and moderate reduction in tensile strength and elongation. Furthermore we indicate a mechanism of wear resistance of gamma irradiated UHMWPE.
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U2 - 10.1115/wtc2005-63656
DO - 10.1115/wtc2005-63656
M3 - Conference contribution
AN - SCOPUS:33144481867
SN - 0791842029
SN - 9780791842027
T3 - Proceedings of the World Tribology Congress III - 2005
SP - 657
EP - 658
BT - Proceedings of the World Tribology Congress III - 2005
PB - American Society of Mechanical Engineers
T2 - 2005 World Tribology Congress III
Y2 - 12 September 2005 through 16 September 2005
ER -