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International Orthopaedics

, Volume 43, Issue 6, pp 1345–1354 | Cite as

Robotic versus conventional primary total knee arthroplasty: clinical and radiological long-term results with a minimum follow-up of ten years

  • Kyu-Jin Cho
  • Jong-Keun Seon
  • Won-Young Jang
  • Chun-Gon Park
  • Eun-Kyoo SongEmail author
Original Paper
  • 212 Downloads

Abstract

Purpose

The aim of this study was (1) to compare the clinical and radiological outcomes of robotic and conventional total knee arthroplasty with a minimum follow-up of ten years, (2) to evaluate the survival rate, (3) and to estimate the accuracy of the two techniques by analyzing the outliers of the total knee arthroplasty (TKA) patients.

Methods

We evaluated 351 patients (390 knees), 155 patients undergoing robotic TKA, and 196 patients treated with conventional TKA with a mean follow-up of 11.0 years. HSS, KSS, WOMAC, and SF-12 questionnaires were used for clinical evaluation. Mechanical alignment, implant radiological measurements, and outliers were analyzed for radiological results. Kaplan-Meier survival analysis was performed for survival rate.

Results

All clinical assessments showed excellent improvements in both groups (all p < 0.05), without any significant difference between the groups (p > 0.05). The conventional TKA group showed a significantly higher number of outliers compared with the robotic TKA group (0 < 0.05). The cumulative survival rate was 98.8% in the robotic TKA group and 98.5% in the conventional TKA group with excellent survival (p = 0.563).

Conclusion

Our study showed excellent survival with both robotic and conventional TKA and similar clinical outcomes at long-term follow-up. And, in terms of radiological outcome, robotic TKA showed better accuracy and consistency with fewer outliers compared with conventional TKA. With longer follow-up and larger cohort, the accuracy and effectiveness of robotic TKA on implant survival rate can be elucidated in the future.

Keywords

Total knee arthroplasty Robotic Conventional Long-term result 

Notes

Compliance with ethical standards

The retrospective randomized study was approved by institutional review board of Chonnam National University Hwasun Hospital and analysis was performed

Conflict of interest

On behalf of all authors, the corresponding author states that there is no conflict of interest.

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Copyright information

© SICOT aisbl 2018

Authors and Affiliations

  • Kyu-Jin Cho
    • 1
  • Jong-Keun Seon
    • 1
  • Won-Young Jang
    • 1
  • Chun-Gon Park
    • 1
  • Eun-Kyoo Song
    • 1
    • 2
    Email author
  1. 1.Center for Joint DiseaseChonnam National University Hwasun HospitalHwasun-GunSouth Korea
  2. 2.Department of Orthopaedic SurgeryChonnam National University Hwasun HospitalHwasun-GunSouth Korea

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