Auger D D, Dowson D, Fisher J
Department of Mechanical Engineering, University of Leeds.
Proc Inst Mech Eng H. 1995;209(2):73-81. doi: 10.1243/PIME_PROC_1995_209_323_02.
Cushion knee prostheses have been designed and constructed that produce approximately equal initial contact areas and theoretical film thicknesses compared with a conventional UHMWPE (ultra-high molecular weight polyethylene) joint. These compliant bearings had a flat tibial component which imposed fewer biomechanical constraints and allowed a greater range of movement. Friction experiments have been carried out on a pendulum simulator apparatus. The results showed that the cushion knee joints operated just within the mixed lubrication regime, but that they benefited from a substantial measure of fluid film lubrication. Microelastohydrodynamic lubrication was effective in preserving low friction and thin but effective lubricating films.
已经设计并制造出了缓冲型膝关节假体，与传统的超高分子量聚乙烯（UHMWPE）关节相比，其产生的初始接触面积和理论油膜厚度大致相等。这些柔顺轴承的胫骨部件是平的，施加的生物力学约束较少，允许更大的运动范围。在摆锤模拟器装置上进行了摩擦实验。结果表明，缓冲型膝关节假体仅在混合润滑状态下运行，但它们受益于大量的流体膜润滑。微弹流润滑对于保持低摩擦以及薄而有效的润滑膜是有效的。
