人工膝関節におけるUHMWPEの厚さ,固定条件および摩擦力の摩耗への影響

概要

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Using the constitutive equation for cyclic plasticity, the effects of thickness and fixation of ultrahigh-molecular-weight polyethylene (UHMWPE) plate and of traction caused by the contact of the femoral and tibial components on wear behavior are evaluated with the aim of improving the artificial knee joint. As a result, it is clarified that the thickness and the fixation of the UHMWPE plate affect the distribution of stress and strain in UHMWPE. To prevent the wear of UHMWPE and to extend the life of the artificial knee joint, the thickness of the UHMWPE plate should be at least 6 mm and the plate should be completely fixed all over the attachment surface. The coefficient of friction also affects the deformation of UHMWPE, especially beneath the surface, and the wear of UHMWPE progresses rapidly when the coefficient of friction increases, as expected.
社団法人日本機械学会の論文
1994-08-25