Abstract
Purpose
The dual mobility cup introduced in France by Gilles Bousquet has been used in total hip replacement in high-risk patients. This device acts as a large ball implant and significantly reduces the risk of dislocation following hip arthroplasty. Published French literature has focused on low rates of dislocation and long-term follow-up similar to the low-friction arthroplasty.
Methods
We retrospectively reviewed a continuous series of 105 cases of dual mobility cup Quattro (Groupe Lépine, Genay, France) implanted from 2000 to 2002. Selection of the patients requiring a primary hip replacement depended on risk criteria such as age, hip disease and activity score. The dual mobility cup was associated with a modular cemented femoral component and a 22.2-mm stainless steel head.
Results
One dislocation occurred one month after the index surgery requiring no revision surgery. According to the Kaplan-Meier method, survival probability was 95.0 % (95 % confidence interval 81.5–98.8) at ten years of follow-up.
Conclusions
Based on clinical outcome and patient assessment we conclude that the dual mobility cup is a reliable option to decrease dislocation risk without increasing polyethylene wear.
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Conflict of interest
Jean-Louis Prudhon and André Ferreira are consultants of Groupe Lépine. Régis Verdier is employed by Groupe Lépine as an epidemiologist.
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Prudhon, JL., Ferreira, A. & Verdier, R. Dual mobility cup: dislocation rate and survivorship at ten years of follow-up. International Orthopaedics (SICOT) 37, 2345–2350 (2013). https://doi.org/10.1007/s00264-013-2067-2
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DOI: https://doi.org/10.1007/s00264-013-2067-2