Quantification of self-polishing in vivo from explanted metal-on-metal total hip replacements

被引：24

作者：

Joyce, Thomas J. ^{[1
]}

Grigg, Harry ^{[1
]}

Langton, David J. ^{[2
]}

Nargol, Antoni V. F. ^{[2
]}

机构：

[1] Newcastle Univ, Sch Mech & Syst Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

[2] Univ Hosp N Tees, Joint Replacement Unit, Stockton On Tees, England

来源：

TRIBOLOGY INTERNATIONAL | 2011年 / 44卷 / 05期

关键词：

Lubrication model; Surface roughness; PROSTHESES; RETRIEVAL; IMPLANTS; BEARING;

D O I：

10.1016/j.triboint.2010.04.007

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

One of the claimed advantages of metal-on-metal total hip replacements is that they 'self-polish' in the body, however this assertion has not been supported by quantitative data. Two pairs of components, each consisting of a femoral head and acetabular cup, were obtained at revision surgery. They were subject to topographical analysis using a non-contacting profilometer. In the 'worn' regions a reduction in surface roughness was seen alongside a change in skewness values from positive to negative, while elastohydrodynamic theory suggested an improvement towards mild mixed lubrication during gait. Therefore self-polishing of metal-on-metal total hip replacements can occur in vivo. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：513 / 516

页数：4

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