ArticleArchives of orthopaedic and trauma surgery2025
Medial Pivot prostheses generate less noise than mobile bearing and cruciate retaining total knee arthroplasties.
Article in Archives of orthopaedic and trauma surgery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeAfter total knee arthroplasty (TKA), patients may experience noise generated by their replaced knee. This study aimed to assess the impact of prosthesis design on noise generation.
methodThis single centre comparative retrospective study was conducted including 200 patients who underwent a TKA between 2020 and 2022 with a minimum of 2 years of follow-up. The SKV, IKS, satisfaction score and Kuriyama questionnaires were completed. Three prosthesis designs were assessed: Medial Pivot (MP) - Microport
resultsThe MP design generated less noise than the MB or CR design. In the MP group, 74.5% of patients did not describe any noise compared to 61.4% for the MB group and 62.1% for the CR group. The rate of patients experiencing noise from their prosthesis was 32%. The majority of patients were very satisfied (68%) or satisfied (24%) with their surgery. Patients who had a silent prosthesis were more satisfied than those who had a prosthesis that generated noise, with a greater proportion of patients in the satisfied/very satisfied group (93% versus 84%); p = 0.02. The average SKV score was 81.8 (± 4.7) in the silent group versus 75 (± 4.6) in the noise group (NS). The functional difference (IKS function score) between the two groups was not statistically significant (36 (± 2.5); 34.6 (± 3.4) vs. p = 0.12).
conclusionThe MP design generates less noise than MB and CR at two years of follow-up after a TKA. LEVEL OF EVIDENCE III: Retrospective comparative study.
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