alexa The influence of head size on corrosion and fretting behaviour at the head-neck interface of artificial hip joints.
Orthopaedics

Orthopaedics

Journal of Arthritis

Author(s): Dyrkacz RM, Brandt JM, Ojo OA, Turgeon TR, Wyss UP

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Abstract The primary goal of this study was to determine if head size affects corrosion and fretting behaviour at the head-neck taper interface of modular hip prostheses. Seventy-four implants were retrieved that featured either a 28 mm or a 36 mm head with a metal-on-polyethylene articulation. The bore of the heads and the neck of the stems were divided into eight regions each and graded by three observers for corrosion and fretting damage separately using modified criteria as reported in the literature. The 36 mm head size featured a significant difference in the corrosion head scores (p=0.022) in comparison to the 28 mm heads. This may be attributed to a greater torque acting along the taper interface due to activities of daily living. Copyright © 2013 Elsevier Inc. All rights reserved. This article was published in J Arthroplasty and referenced in Journal of Arthritis

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