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Published on: February 2, 2018
Analysis of an explanted dual mobility cup after 21 years, parabolic wear pattern: A case report
Michel-Henri Fessy1, Arthur Fessy2, Anthony Viste1
1Hospices Civils de Lyon, Hôpital Lyon Sud, Chirurgie Orthopédique et Traumatologique, 165 Chemin du Grand Revoyet, 69495 Pierre Bénite Cedex, France - Univ de Lyon, Université Claude Bernard Lyon 1, Univ Gustave Eiffel, IFSTTAR, LBMC UMRT_9406, Lyon, France.
Case:
A dual mobility cup was implanted in 1983 in a 43-year woman. After 31 years of normal function, we analysed the explanted materials with modern techniques.
Conclusion:
Volumetric wears of the small and large articulations of the dual-mobility construct were similar. For the first time, we demonstrated that the dual-mobility liner underwent parabolic (not linear) wear during the period of implantation.
