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BioMed Research International
Volume 2015, Article ID 485975, 9 pages
http://dx.doi.org/10.1155/2015/485975
Review Article

Titanium-Nitride Coating of Orthopaedic Implants: A Review of the Literature

1Department of Orthopaedics, Catharina Hospital, 5623 EJ Eindhoven, Netherlands
2Research Centre Linnaeus Institute, Spaarne Hospital, 2134 TM Hoofddorp, Netherlands
3Department of Orthopaedics, VU University Medical Centre, 1081 HZ Amsterdam, Netherlands
4Department of Orthopaedics, Spaarne Hospital, 2134 TM Hoofddorp, Netherlands

Received 20 April 2015; Accepted 24 May 2015

Academic Editor: Hiroshi Ito

Copyright © 2015 Ruud P. van Hove et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Surfaces of medical implants can be enhanced with the favorable properties of titanium-nitride (TiN). In a review of English medical literature, the effects of TiN-coating on orthopaedic implant material in preclinical studies were identified and the influence of these effects on the clinical outcome of TiN-coated orthopaedic implants was explored. The TiN-coating has a positive effect on the biocompatibility and tribological properties of implant surfaces; however, there are several reports of third body wear due to delamination, increased ultrahigh molecular weight polyethylene wear, and cohesive failure of the TiN-coating. This might be due to the coating process. The TiN-coating process should be optimized and standardized for titanium alloy articulating surfaces. The clinical benefit of TiN-coating of CoCrMo knee implant surfaces should be further investigated.