STP1560

    Method of Characterizing Fretting and Corrosion at the Various Taper Connections of Retrieved Modular Components from Metal-on-Metal Total Hip Arthroplasty

    Published: May 2013


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    Abstract

    The purpose of this study was to determine the suitability of a fretting and corrosion scoring method for nondestructive evaluation of metal-on-metal (MOM) total hip systems. One hundred six (106) MOM bearing systems were collected between 2003 and 2012 in an NIH-supported, multi-institutional retrieval program. From these, 76 heads and 31 stems (22 modular necks) of 7 different bearing designs (5 manufacturers) were available for analysis, along with 10 modular CoCr acetabular liners and 5 corresponding acetabular shells. Explants were cleaned and scored at the head taper, stem taper, male neck taper (for modular stems), liner, and shell interfaces in accordance with the semi-quantitative method adapted from a previously published technique. Fretting and corrosion were observed on 68 of 76 (89 %) head tapers, 21 of 31 (68 %) stem tapers, 20 of 22 (91 %) male neck tapers, 10 of 10 (100 %) modular liners and 5 of 5 (100 %) modular shells. Adaptation of the method developed by Goldberg and colleagues is suitable for the variety of modular connections in contemporary MOM THA implants, which may incorporate modular femoral and/or acetabular components. These results support the inclusion of fretting and corrosion evaluation in standardized MOM retrieval inspection protocols.

    Keywords:

    metal-on-metal (MOM), total hip arthroplasty (THA), MOM, fretting, corrosion, modularity


    Author Information:

    Higgs, Genymphas B.
    Graduate Student, Drexel Univ., Philadelphia, PA

    Hanzlik, Josa A.
    Graduate Student, Drexel Univ., Philadelphia, PA

    MacDonald, Daniel W.
    Graduate Student, Drexel Univ., Philadelphia, PA

    Kane, William M.
    Senior Engineer, Exponent, Inc., Philadelphia, PA

    Adjunct Professor, Drexel Univ., Philadelphia, PA

    Day, Judd S.
    Managing Scientist, Exponent, Inc., Philadelphia, PA

    Research Professor, Drexel Univ., Philadelphia, PA

    Klein, Gregg R.
    Attending Physician, Hartzband Center for Hip and Knee Replacement, Paramus, NJ

    Parvizi, Javad
    Orthopaedic Surgeon and Director of Clinical Research, Rothman Institute, Philadelphia, PA

    Mont, Michael A.
    Director, Joint Preservation and Reconstruction, Rubin Institute for Advanced Orthopedics, Baltimore, MD

    Kraay, Matthew J.
    Director, Division of Joint Reconstruction and Arthritis Surgery, Dept. of Orthopaedic Surgery, Univ. Hospitals Case Medical Center, Cleveland, OH

    Martell, John M.
    Director and Associate Professor of Surgery, Orthopaedic Research Institute, The Univ. of Chicago Hospitals, Chicago, IL

    Gilbert, Jeremy L.
    Professor, Biomedical and Chemical Engineering, Syracuse Univ., Syracuse, NY

    Rimnac, Clare M.
    Wilbert J. Austin Professor of Engineering, Mechanical and Aerospace Engineering, Director, Orthopaedic Implant Retrieval Analysis Laboratory, Dept. of Orthopaedic Surgery, Case Western Reserve Univ., Cleveland, OH

    Kurtz, Steven M.
    Corporate Vice President and Principal, Exponent, Inc., Philadelphia, PA

    Research Professor, Drexel University, Philadelphia, PA


    Paper ID: STP156020120042

    Committee/Subcommittee: F04.22

    DOI: 10.1520/STP156020120042


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