Bigsby R J, Hardaker C S, Fisher J
Department of Mechanical Engineering, University of Leeds.
Proc Inst Mech Eng H. 1997;211(3):265-9. doi: 10.1243/0954411971534377.
The Leeds physiological anatomical (PA) hip joint simulator was developed to apply three axes of loading and a complex three-dimensional motion so that the forces and motions can reproduce exactly the walking cycles defined by Paul. This paper presents the results of a study using the Leeds PA hip joint simulator to determine the wear of 32 mm ultra-high molecular weight polyethylene (UHMWPE) acetabular cups against stainless steel and zirconia ceramic heads, using bovine serum as lubricant. These results have been compared with the results of a previous study that used water as the lubricant, which led to UHMWPE transfer film being formed on the stainless steel head. Comparisons are also made with clinical results and results from other simulators. The study indicates that it is preferable to use bovine serum in simulator studies. In addition, the results indicate that if the surface roughness of the metallic and femoral heads are similar, and they remain undamaged during the tests, the wear rates of the UHMWPE cups are likely to be similar.
利兹生理解剖（PA）髋关节模拟器的开发目的是施加三个加载轴和复杂的三维运动，以便力和运动能够精确再现保罗定义的步行周期。本文介绍了一项研究的结果，该研究使用利兹PA髋关节模拟器，以牛血清为润滑剂，测定32毫米超高分子量聚乙烯（UHMWPE）髋臼杯与不锈钢和氧化锆陶瓷股骨头之间的磨损情况。这些结果已与之前一项以水为润滑剂的研究结果进行了比较，该研究导致在不锈钢头上形成了UHMWPE转移膜。同时也与临床结果和其他模拟器的结果进行了比较。该研究表明，在模拟器研究中使用牛血清更可取。此外，结果表明，如果金属股骨头和陶瓷股骨头的表面粗糙度相似，且在测试过程中未受损，UHMWPE杯的磨损率可能相似。
