Graphitic Tribological Layers in Metal-on-Metal Hip Replacements

  title={Graphitic Tribological Layers in Metal-on-Metal Hip Replacements},
  author={Yifeng Liao and Robin Pourzal and Markus A. Wimmer and Joshua J. Jacobs and Alfons Fischer and Laurence D. Marks},
  pages={1687 - 1690}
A graphitic layer is found to be the cause of low friction in metal-on-metal hip implants. Arthritis is a leading cause of disability, and when nonoperative methods have failed, a prosthetic implant is a cost-effective and clinically successful treatment. Metal-on-metal replacements are an attractive implant technology, a lower-wear alternative to metal-on-polyethylene devices. Relatively little is known about how sliding occurs in these implants, except that proteins play a critical role and… 

Tribolayer formation in a metal-on-metal (MoM) hip joint: an electrochemical investigation.

Tribological interactions of metal in total hip arthroplasty (THA)

Wear debris in MOM hip replacements is now thought to be implicated in causing a local soft-tissue inflammatory response leading to premature failure of the implant.

Tribology, corrosion and tribocorrosion of metal on metal implants

Abstract Metal on metal joint replacements are considered as an alternative to metal on polyethylene implants, especially in case of young patients who require a safe and long term performance of the

Tribo-biological deposits on the articulating surfaces of metal-on-polyethylene total hip implants retrieved from patients

Results showed that the attached tribo-layer contained not only denatured proteins but also a fraction of polymer particles, suggesting that enhancing interface lubrication may be more effective on reducing wear than increasing the hardness of material.

CoCrMo metal-on-metal hip replacements.

This perspective article is intended to outline some recent progresses in understanding wear and corrosion of metal-on-metal hip replacement both in vivo and in vitro.

The composition of tribofilms produced on metal-on-metal hip bearings.

Friction and Wear Characteristics of Surface-Modified Titanium Alloy for Metal-on-Metal Hip Joint Bearing

Cobalt-chromium-molybdenum bearing materials have excellent wear resistance, but due to the cytotoxicity issue of chromium ions, they need to be replaced with biocompatible metal materials. Titanium

Electrochemically Induced Film Formation on CoCrMo Alloy for Hip Implant Application

Metal-on-metal (MoM) hip retrievals exhibited the presence of carbonaceous tribofilms, derived from synovial proteins, particularly on the articulating surfaces. Studies suggest that the films



Engineering issues and wear performance of metal on metal hip implants.

The present study suggests that the use of metal on metal articulating surfaces may mitigate the problem of osteolysis by offering improved wear performance.

Wear mechanisms in metal‐on‐metal bearings: The importance of tribochemical reaction layers

  • M. WimmerA. Fischer J. Jacobs
  • Materials Science
    Journal of orthopaedic research : official publication of the Orthopaedic Research Society
  • 2010
It is found that the tribolayers are nanocrystalline in structure, and that they incorporate organic material stemming from the synovial fluid, which provides the basis for understanding particle release and may help in identifying new strategies to reduce MoM wear.

Comparison of friction and lubrication of different hip prostheses

  • S. ScholesA. Unsworth
  • Materials Science
    Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine
  • 2000
Mixed lubrication was found to occur in the metal-on-metal (CoCrMo/CoCr Mo) joints with all lubricants at a viscosity within the physiological range, and a strong correlation was observed between experiment and theory when employing CMC fluids or silicone fluids as the lubricant.

Direct experimental evidence of lubrication in a metal-on-metal total hip replacement tested in a joint simulator

Abstract The purpose of the study reported in this paper was to investigate experimentally the conditions of lubrication and contact between a metallic femoral head and a metallic acetabular cup in a

In vivo wear of three types of metal on metal hip prostheses during two decades of use.

Metal on metal hip replacements, including McKee-Farrar, Müller, and Ring, that were retrieved from patients after as many as 25 years showed early wear included substantial third body abrasion, possibly from particles generated while scratches from the original polishing were being eradicated and from dislodged surface carbides.

Biotribocorrosion—an appraisal of the time dependence of wear and corrosion interactions: II. Surface analysis

Metal-on-metal joint replacements have been considered an effective alternative to metal-on-polyethylene bearings. Various electrochemical and spectroscopic techniques have been used in studying the

Adverse reaction to metal debris following hip resurfacing: the influence of component type, orientation and volumetric wear.

Increased wear from the metal-on-metal bearing surface was associated with an increased rate of failure secondary to ARMD, however, the extent of tissue destruction at revision surgery did not appear to be dose-related to the volumetric wear.