Abstract
Purpose
Introduced in the market in 1990 by Ceraver (France), the posterior-stabilised (PS) Hermes prosthesis has limited literature regarding long-term survivability. The purpose of the study is to evaluate the survival and functional outcomes of the prosthesis.
Methods
A retrospective case series was performed including 164 patients (176 knees) having undergone total knee arthroplasty with the Hermes prosthesis between 1997 and 2000 with a follow-up period of 18 years.
Results
Kaplan–Meier analysis showed a survival rate of 99.4% (95% CI. 96.0–100.0%) at 18.4 years with one revision. At final follow-up, the International Knee Society (IKS) functional score was 93.2 ± 15.6 and IKS knee score was 99.1 ± 2.5.
Conclusion
The Hermes PS model is a low conformity prosthesis that offers reliable durability that is comparable to other popular designs while minimizing rotational constraints and having an approachable learning curve for new users.
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Data availability
Available upon request.
Code availability
Not applicable.
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Dr Pitsaer participated in conceptualisation, investigation, methodology, project administration, formal analysis, and review/editing of the study. Dr Chergui performed data curation, formal analysis, visualisation, manuscript writing, and review/editing. Dr Lavoie was involved in project administration, supervision, validation, and review/editing.
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Pitsaer, E., Chergui, S. & Lavoie, F. Long-term results of a rotationally unconstrained fixed-bearing total knee prosthesis. International Orthopaedics (SICOT) 48, 965–970 (2024). https://doi.org/10.1007/s00264-024-06097-5
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DOI: https://doi.org/10.1007/s00264-024-06097-5