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Technical Brief

An Investigation of the Geometric and Surface Finish Features of Co–Cr–Mo Hip Taper Junction Designs1

[+] Author and Article Information
Oleg Vesnovsky, Matthew A. Di Prima

U.S. Food and Drug Administration,
Silver Spring, MD 20993

L. D. Timmie Topoleski

U.S. Food and Drug Administration,
Silver Spring, MD 20993;
University of Maryland–Baltimore County,
Baltimore, MD 21250

Paul Kovacs

Electrochemistry/Biocompatibility Consultant,
Santa Claus, IN 47579

DOI: 10.1115/1.4033735Manuscript received March 1, 2016; final manuscript received March 16, 2016; published online August 1, 2016. Editor: William Durfee.

J. Med. Devices 10(3), 030907 (Aug 01, 2016) (3 pages) Paper No: MED-16-1078; doi: 10.1115/1.4033735 History: Received March 01, 2016; Revised March 16, 2016

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Figures

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Fig. 6

Separation force and ion concentration results

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Fig. 5

Micromotion—cycle test examples

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Fig. 4

Results of micromotion measured by the top and bottom extensometers

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Fig. 3

Results of profilometry and optical imaging

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Fig. 2

Combined use of digital microscopy and optical profilometry to assess surface features of matched taper–trunnion couples post fatigue testing

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Fig. 1

Experimental setups for fatigue tests (a) and displacement measurements (b)

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