Surface Resistance of Dispersion Ceramics against Third Body Abrasion

被引:5
作者
Oberbach, Th. [1 ]
Begand, S. [1 ]
Kaddick, C. [2 ]
机构
[1] Mathys Orthopaedie GmbH, Trillers Bueschen 2, D-07646 Moersdorf, Germany
[2] Endolab GmbH, D-83101 Rosenheim, Germany
来源
BIOCERAMICS 21 | 2009年 / 396-398卷
关键词
hip joint; wear; third body wear; ceramic; CROSS-LINKED POLYETHYLENE; BONE-CEMENT PARTICLES; WEAR;
D O I
10.4028/www.scientific.net/KEM.396-398.161
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
Wear of the articulation partners in artificial joints for hip or knee is known to influence the in vivo survival rate of the implants. Wear amount can be strongly increased if third body wear occurs in the joint gap. Alumina ceramic is noted for a good wear resistance even under these worst case conditions. We tested the wear behaviour of the new dispersion ceramics ZTA (Zirconia Toughened Alumina) and ATZ (Alumina Toughened Zirconia) in comparison to alumina for the couplings ceramic on PE and ceramic on ceramic in a hip joint simulator in presence of third body particles.
引用
收藏
页码:161 / 164
页数:4
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