超高分子量聚乙烯与氧化锆陶瓷及不锈钢股骨头在人工髋关节中磨损的对比研究。

Comparative study of the wear of UHMWPE with zirconia ceramic and stainless steel femoral heads in artificial hip joints.

作者信息

Derbyshire B, Fisher J, Dowson D, Hardaker C, Brummitt K

机构信息

Department of Mechanical Engineering, University of Leeds, UK.

出版信息

Med Eng Phys. 1994 May;16(3):229-36. doi: 10.1016/1350-4533(94)90042-6.

DOI:10.1016/1350-4533(94)90042-6

PMID:8061909

Abstract

The wear of ultra high molecular weight polyethylene (UHMWPE) when sliding against zirconia ceramic and stainless steel counterfaces has been compared in a pin-on-plate reciprocator and in a hip joint simulator. A lower wear factor was found for the UHMWPE when sliding on the zirconia ceramic counterfaces in the pin-on-plate tests. In the hip joint simulator test, the acetabular cups articulating on zirconia heads showed consistently lower volume changes than the cups articulating on stainless steel heads. The higher volume changes found with the stainless steel heads were associated with an increased roughness of the femoral heads during the tests. This roughening was caused by the adherence of a rough polymer transfer film.

摘要

在销盘往复式摩擦磨损试验机和髋关节模拟器中，对超高分子量聚乙烯（UHMWPE）与氧化锆陶瓷及不锈钢对磨面滑动时的磨损情况进行了比较。在销盘试验中，UHMWPE在氧化锆陶瓷对磨面上滑动时磨损系数较低。在髋关节模拟器试验中，与在不锈钢股骨头假体上的髋臼杯相比，与氧化锆股骨头假体相连的髋臼杯的体积变化始终较小。试验中发现，不锈钢股骨头假体导致的较高体积变化与股骨头表面粗糙度增加有关。这种粗糙度增加是由粗糙的聚合物转移膜附着所致。