Abstract
Purpose
The aim of our study was to assess the radio-clinical results, mid-term survivorship and dislocation rate of a new-generation dual-mobility cup.
Methods
The first 100 patients (104 primary total hip arthroplasties) who were implanted with a new-generation cementless dual-mobility cup (Sunfit TH, Serf, Décines) were included in our study, with a minimum follow-up of five years.
Results
Average follow-up was six years ± 0.44 (5–7). At last follow-up, the Harris and PMA scores were significantly improved, from 56 to 94 and 13 to 17 respectively (p < 0.001). No radiolucent line could be observed. There were no cases of prosthetic or intraprosthetic dislocation in our series. Survivorship without cup loosening as the endpoint was 100 %.
Conclusions
This study confirmed the interest of dual mobility in preventing prosthetic hip dislocation. Intraprosthetic dislocation is a complication that seems to have been resolved in the mid-term follow-up.
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Conflicts of interest
M.H.F. is a consultant for the Serf company.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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Vermersch, T., Viste, A., Desmarchelier, R. et al. Prospective longitudinal study of one hundred patients with total hip arthroplasty using a second-generation cementless dual-mobility cup. International Orthopaedics (SICOT) 39, 2097–2101 (2015). https://doi.org/10.1007/s00264-015-2985-2
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DOI: https://doi.org/10.1007/s00264-015-2985-2