Bitsch Rudi G, Loidolt Travis, Heisel Christian, Ball Scott, Schmalzried Thomas P
Stiftung Orthopädische Universitätsklinik, Schlierbacher Landstrasse 200A, 69118 Heidelberg, Germany.
J Bone Joint Surg Am. 2008 Jul;90(7):1487-91. doi: 10.2106/JBJS.F.00991.
We previously reported wear data at a minimum of two years following thirty-four total hip replacements with a Marathon cross-linked polyethylene liner and twenty-four replacements with a conventional (gamma-sterilized-in-air) Enduron polyethylene liner. In this current study, with sequential five-year radiographs, wear rates were determined with use of linear regression analysis. The Marathon polyethylene had average wear rates of 15.4 mm(3)/yr and 8.0 mm(3)/million cycles. The Enduron polyethylene had average wear rates of 55.5 mm(3)/yr and 29.9 mm(3)/million cycles. The adjusted volumetric wear rate of the Marathon polyethylene was 73% lower than that of the Enduron polyethylene (p = 0.001). Osteolysis developed in eight of the twenty-four hips with an Enduron liner but was not apparent in any hip with a Marathon liner.
我们之前报告了34例使用马拉松交联聚乙烯内衬的全髋关节置换术以及24例使用传统（空气中伽马灭菌）恩杜伦聚乙烯内衬的全髋关节置换术至少两年后的磨损数据。在本项研究中，利用连续五年的X光片，通过线性回归分析确定磨损率。马拉松聚乙烯的平均磨损率为每年15.4立方毫米和每百万次循环8.0立方毫米。恩杜伦聚乙烯的平均磨损率为每年55.5立方毫米和每百万次循环29.9立方毫米。马拉松聚乙烯的调整后体积磨损率比恩杜伦聚乙烯低73%（p = 0.001）。使用恩杜伦内衬的24例髋关节中有8例出现骨质溶解，但使用马拉松内衬的髋关节中均未出现明显的骨质溶解。
