A five-station hip joint simulator

被引：16

作者：

Smith, SL ^{[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 | 2001年 / 215卷 / H1期

关键词：

wear; hip simulators; zirconia ceramic; ultra-high molecular weight polyethylene; (UHMWPE);

D O I：

10.1243/0954411011533535

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

A five-station hip joint wear simulator was designed and built which featured simplified motion and loading. An elliptical wear path was produced using approximately sinusoidal motion in the flexion/extension and internal/external rotation axes and the dynamic loading approximated to a square wave. Five 28 mm diameter zirconia femoral heads articulated against ultra-high molecular weight polyethylene acetabular cups in 25 per cent bovine serum for 5 x 10(6) cycles. Gravimetric wear measurement was used with moisture absorption compensation using a dynamically loaded soak control. With motion of physiological magnitude, the mean acetabular cup wear rate was 52.2 mm(3)/10(6) cycles which is comparable with a number of clinical studies.

引用

页码：61 / 64

页数：4

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