Volume 9, 2023
|Number of page(s)||7|
|Published online||17 January 2023|
Analysis of an explanted dual mobility cup after 21 years, parabolic wear pattern: A case report
Hospices Civils de Lyon, Hôpital Lyon Sud, Chirurgie Orthopédique et Traumatologique, 165 Chemin du Grand Revoyet, 69495 Pierre Bénite Cedex, France
2 Univ de Lyon, Université Claude Bernard Lyon 1, Univ Gustave Eiffel, IFSTTAR, LBMC UMRT_9406, Lyon, France
3 INSA, 20 Av des Buttes de Coesmes, Rennes, France
* Corresponding author: firstname.lastname@example.org
Accepted: 26 December 2022
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.
Key words: Dual mobility / Wear / Total hip arthroplasty
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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