Frictional properties of artificial hip joints.
Frictional properties of artificial hip joints.
复制标题
人工髋关节的摩擦特性。
DOI：
10.1243/emed_jour_1988_017_029_02
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
G. White
中科院分区：
文献类型：
--
作者：
A. Unsworth;M. Pearcy;E. White;G. White
新一代髋关节置换物的设计包含柔顺层，以在关节植入患者体内时促进液膜润滑。在达勒姆髋关节功能模拟器中进行的测试表明，这些关节中的摩擦力比目前使用的假肢低一个数量级，并且由于摩擦表面完全分离，因此磨损应该大大减少。实验表明，使用硬度在 4 至 8 N/mm2 之间的柔顺表面可以获得最佳结果。此类表面产生的摩擦系数约为 5 × 10-3。
A new generation of hip replacements has been designed incorporating compliant layers to promote fluid film lubrication when the joints are implanted in patients. Tests in the Durham hip function simulator show that the friction in these joints is up to an order of magnitude lower than in currently used prostheses, and because this is due to complete separation of the rubbing surfaces, wear ought to be vastly reduced.Experiments have shown that the best results are achieved with compliant surfaces of hardness between 4 and 8 N/mm2. Such surfaces produce coefficients of friction of the order of 5 × 10-3.