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BioMed Research International
Volume 2015, Article ID 758123, 9 pages
http://dx.doi.org/10.1155/2015/758123
Review Article

Head-Neck Taper Corrosion in Hip Arthroplasty

1Department of Orthopaedics and Trauma, Royal Adelaide Hospital, North Terrace, Adelaide, SA 5000, Australia
2Department of Orthopaedics and Trauma, Royal Adelaide Hospital and Centre for Orthopaedic and Trauma Research, The University of Adelaide, North Terrace, Adelaide, SA 5000, Australia
3School of Computer Science, Engineering and Mathematics, Flinders University, Clovelly Park, SA 5042, Australia

Received 14 February 2015; Accepted 25 March 2015

Academic Editor: Akihiro Sudo

Copyright © 2015 S. Hussenbocus 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

Modularity at the head-neck junction of the femoral component in THA became popular as a design feature with advantages of decreasing implant inventory and allowing adjustment of leg length, offset, and soft tissue balancing through different head options. The introduction of a new modular interface to femoral stems that were previously monoblock, or nonmodular, comes with the potential for corrosion at the taper junction through mechanically assisted crevice corrosion. The incidence of revision hip arthroplasty is on the rise and along with improved wear properties of polyethylene and ceramic, use of larger femoral head sizes is becoming increasingly popular. Taper corrosion appears to be related to all of its geometric parameters, material combinations, and femoral head size. This review article discusses the pathogenesis, risk factors, clinical assessment, and management of taper corrosion at the head-neck junction.