Abstract
Short-duration, cyclically loaded, axial, fretting corrosion tests were designed and performed to compare the fretting behaviour of different metal Howmedica® universal modular heads connected to coated and uncoated metal cone taper spigots. Concurrent axial push-on and pull-off taper friction tests were also performed. There was no measurable fretting debris found in any test and SEM studies of the contact surfaces showed no evidence of fretting. It is concluded that no significant, long-term fretting corrosion of the Vitallium® Co-Cr-Mo heads on the Vitallium or uncoated Ti-6AI-4V spigots, nor of the Orthinox® stainless steel heads on the Orthinox spigots, is likely to occur in vivo.
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