Evaluation of a hip joint simulator

被引：14

作者：

Smith, SL ^{[1
]}

Burgess, IC ^{[1
]}

Unsworth, A ^{[1
]}

机构：

[1] Univ Durham, Sch Engn, Ctr Biomed Engn, Sci Labs, Durham DH1 3LE, England

来源：

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART H-JOURNAL OF ENGINEERING IN MEDICINE | 1999年 / 213卷 / H6期

关键词：

wear; hip simulators; PTFE; UHMWPE;

D O I：

10.1243/0954411991535077

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

To evaluate the functioning of the Durham hip joint wear simulator, the wear rates of ultra high molecular weight polyethylene (UHMWPE) and polytetrafluoroethylene (PTFE) acetabular cups articulating against 22 mm diameter cobalt-chromium-molybdenum (CoCrMo) femoral heads were studied. A wear test was conducted in a lubricant of distilled water at 37 degrees C for a duration of 4.8 million cycles. The average penetration rate for the CoCrMo femoral heads against UHMWPE acetabular cups was 0.03 mm/10(6) cycles, while penetration rate for PTFE cups was some twenty times greater. These results are of a similar order of magnitude to other simulator studies in distilled water and are in a similar ratio to clinical data.

引用

页码：469 / 473

页数：5

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