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.
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页码：61 / 64
页数：4
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