STP859

    Corrosion-Fatigue Performance of Hip Nails: The Influence of Materials Selection and Design

    Published: Jan 1985


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    Abstract

    Corrosion-fatigue performance is evaluated for several Jewett-type hip nails of different design tested in Ringer's solution. Other devices of similar design fabricated from Type 316L stainless steel and Ti-6AI-4V are tested as well. Microstructural and fractographic analyses of all devices are also performed. Present results confirm initial observations that the corrosion-fatigue performance of large-plate Jewetts exceeds that of small-plate devices. Devices of similar design except for the placement of the proximal screw hole in a centered or offset position are evaluated; the latter devices improved corrosion-fatigue performance. Comparison of Jewetts of similar design reveals that the corrosion-fatigue performance of the Ti-6AI-4V devices markedly exceeds that of the Type 316L, even in the presence of substantial fretting and wear.

    Keywords:

    implant materials, stainless steels, titanium alloys, orthopedic implants, corrosion fatigue, fretting corrosion, fretting fatigue, hip nails, performance tests, fatigue (materials), fatigue-crack initiation, medical devices


    Author Information:

    Piehler, HR
    Professor, former graduate student, and graduate student, Carnegie-Mellon University, Pittsburgh, PA

    Portnoff, MA
    Associate scientist, Mellon Institute, Pittsburgh, PA

    Sloter, LE
    Senior scientist, Vought Corporation, Dallas, TX

    Vegdahl, EJ
    Professor, former graduate student, and graduate student, Carnegie-Mellon University, Pittsburgh, PA

    Gilbert, JL
    Professor, former graduate student, and graduate student, Carnegie-Mellon University, Pittsburgh, PA

    Weber, MJ
    Program engineer, General Electric Company, San Jose, CA


    Paper ID: STP33244S

    Committee/Subcommittee: F04.19

    DOI: 10.1520/STP33244S


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