Actions for Fretting Corrosion Mechanisms at Modular Implant Interfaces

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Fretting Corrosion Mechanisms at Modular Implant Interfaces / SC. Jani, WL. Sauer, TW. McLean, RD. Lambert, P. Kovacs

Conference Author
Modularity of Orthopedic Implants (1995 : Norfolk, VA)
Physical Description
1 online resource (15 pages) : illustrations, figures, tables
Additional Creators
Jani, SC., Kovacs, P., Lambert, RD., McLean, TW., Sauer, WL., American Society for Testing and Materials, and ASTM International
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Summary
Modular connections have been commonly and successfully utilized in orthopaedic implant systems for the last 15 or so years, particularly at the head/neck junction in total hip arthroplasty (THA). However, recent retrieval studies have shown that some of the tapered junctions between femoral heads and stems in total hip arthoplasty can be prone to fretting corrosion, and may be a cause for concern in the longevity of implants. Fretting corrosion, which may release metallic products (particulate debris and ions) into the joint space, is a complex phenomenon in which the interplay between mechanically induced interfacial micromotion (fretting) and electrochemical corrosive activity play an important role, along with materials selection and processes. This suggests that interfacial fretting corrosion at modular implant interfaces can be significantly affected by the design variables of the modular junction. The working hypothesis of this study was that different designs of the modular head/stem combination of femoral hip prostheses exhibit different release of fretting corrosion metal products during fatigue testing used to simulate ten years of in vivo service. Three designs of femoral head (Co-Cr-Mo alloy) and stem (Ti-6Al-4V alloy) combinations were investigated in this study. The study included detailed taper metrology followed by environmental fatigue testing of the tapered junctions. The results of this study showed that important taper design differences do exist in the three constructs tested, and these differences manifested in different fretting corrosion behavior.
Dates of Publication and/or Sequential Designation
Volume 1997, Issue 1301 (January 1997)
Subject(s)
Other Subject(s)
ISBN
9780803153592 (e-ISBN)
9780803124158
0803124155
Digital File Characteristics
text file PDF
Bibliography Note
Includes bibliographical references 13.
Other Forms
Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
Full text article also available for purchase.
Also available in PDF edition.
Reproduction Note
Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1997. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
Technical Details
Mode of access: World Wide Web.
Source of Acquisition
ASTM International PDF Purchase price USD25.
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