Rostoker W
J Biomed Mater Res. 1978 May;12(3):317-35. doi: 10.1002/jbm.820120306.
An examination has been made of the wear surfaces of 21 ultra-high-molecular-weight polyethylene components of hip and knee joint prostheses removed from patients. Both light optics and scanning electron microscope systems of examination have been used. The appearances are compared with specimens subjected to two different in vitro wear tests. Surface appearances related to the wear experience have been classified into seven modes. At least four of these are evidences of what may be four different wear mechanisms. Entrapment of bone-cement particles between articulating surfaces is fundamentally extraneous but is seen to generate the most severe wear. In the absence of bone-cement particles, in vivo, wear seems to be mild. Wear in vitro produces similar surface modes but with different relative emphasis.
对从患者体内取出的21个髋关节和膝关节假体的超高分子量聚乙烯部件的磨损表面进行了检查。使用了光学显微镜和扫描电子显微镜检查系统。将这些外观与经过两种不同体外磨损试验的标本进行了比较。与磨损情况相关的表面外观已被分为七种模式。其中至少四种是四种不同磨损机制的证据。关节表面之间骨水泥颗粒的嵌入从根本上来说是外来的，但却会产生最严重的磨损。在没有骨水泥颗粒的情况下，体内磨损似乎很轻微。体外磨损产生类似的表面模式，但相对重点不同。
