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No difference between fixed- and mobile-bearing total knee arthroplasty in activities of daily living and pain: a randomized clinical trial

  • Knee
  • Published:
Knee Surgery, Sports Traumatology, Arthroscopy Aims and scope

Abstract

Purpose

Until now, there are no definitive conclusions regarding functional differences related to middle- and long-term everyday activities and patient pain following implantation of mobile- and fixed-platform tibial prostheses. The aim of this study was to determine whether there are middle-term differences in knee function and pain in patients undergoing fixed- and mobile-bearing total knee arthroplasty (TKA).

Methods

Eligible patients were randomized into two groups: the first group received TKA implantation with a fixed tibial platform (group A); the second group received TKA with a mobile tibial platform (group B). Patients were followed up (2 years), and their symptoms and limitations in daily living activities were evaluated using the Knee Outcome Survey—Activities of Daily Living Scale (ADLS), in addition to pain evaluation assessed using the pain visual analogue scale (VAS).

Results

There were no significant differences in function and symptoms in the ADLS and VAS between the study groups.

Conclusion

The type of platform used in TKA (fixed vs. mobile) does not change the symptoms, function or pain of patients 2 years post-surgery. Although mobile TKAs may have better short-term results, at medium- and long-term follow-up they do not present important clinical differences compared with fixed-platform TKAs. This information is important so that surgeons can choose the most suitable implant for each patient.

Level of evidence

Randomized clinical trial, Level I.

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Authors and Affiliations

  1. Departamento de Ortopedia e Traumatologia, Centro de Traumatologia do Esporte (CETE), Universidade Federal de São Paulo, Rua Borges Lagoa, 783, 5° andar, Vila Clementino, São Paulo, SP, CEP 04038-032, Brazil

    Joicemar Tarouco Amaro, Gustavo Gonçalves Arliani, Diego Costa Astur & Moises Cohen

  2. Departamento de Ortopedia e Traumatologia, Universidade Federal de São Paulo, São Paulo, SP, Brazil

    Pedro Debieux

  3. Grupo do Joelho, Departamento de Ortopedia e Traumatologia, Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, SP, Brazil

    Camila Cohen Kaleka

Authors
  1. Joicemar Tarouco Amaro
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  2. Gustavo Gonçalves Arliani
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  3. Diego Costa Astur
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  4. Pedro Debieux
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  5. Camila Cohen Kaleka
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  6. Moises Cohen
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Corresponding author

Correspondence to Gustavo Gonçalves Arliani.

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Amaro, J.T., Arliani, G.G., Astur, D.C. et al. No difference between fixed- and mobile-bearing total knee arthroplasty in activities of daily living and pain: a randomized clinical trial. Knee Surg Sports Traumatol Arthrosc 25, 1692–1696 (2017). https://doi.org/10.1007/s00167-016-4106-1

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  • DOI: https://doi.org/10.1007/s00167-016-4106-1

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