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Journal of Orthopaedic Surgery and Research

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Open Access 01-12-2022 | Research article

Robotics versus personalized 3D preoperative planning in total knee arthroplasty: a propensity score-matched analysis

Authors: Kai Lei, LiMing Liu, PengFei Yang, Ran Xiong, Liu Yang, Rui He, Lin Guo

Published in: Journal of Orthopaedic Surgery and Research | Issue 1/2022

Abstract

Purpose

Lower limb alignment is crucial in total knee arthroplasty (TKA). Previous studies have shown that robotics and personalized three-dimensional (3D) preoperative planning could improve postoperative alignment accuracy compared with conventional TKA, but comparison between the above two techniques has never been reported. The authors hypothesized that robotics may be superior to personalized 3D preoperative planning in terms of postoperative alignment in primary TKA, with similar patient-reported outcome measures (PROMs) but higher cost and longer operative time.

Methods

A consecutive series of patients who received TKA in our center from September 2020 to January 2021 were enrolled retrospectively. After 1:2 matching, 52 and 104 patients were included and divided into study group for robotics and control group for personalized 3D preoperative planning, respectively. Multiple postoperative alignment angles were measured, and clinical features such as operation and tourniquet time, length of hospital stay and hemoglobin (Hb) were recorded. Knee Society Score (KSS) and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) were used to evaluate clinical results.

Results

Compared with control group, robotics group had significantly lower frontal femoral component angle (FFC) and frontal tibial component angle (FTC) absolute deviation (P < 0.05). It also had less outliers in hip–knee–ankle angle (HKA), FTC, lateral femoral component angle (LFC) and lateral tibial component angle (LTC) (P < 0.05). Hb loss of robotics group was significantly lower than control group (P < 0.001), while the operation and tourniquet time were longer (P < 0.001). There was no significant difference in KSS and WOMAC scores between two groups.

Conclusion

Compared with control group, patients in robotics group had significantly less malalignment, malposition, Hb loss, but similar PROMs. The operations in robotics group spent longer operation time and cost more compared with control group.

Trial registration: The Chinese Clinical Trial Registry, ChiCTR2000036235. Registered 22 August 2020, http://www.chictr.org.cn/showproj.aspx?proj=59300.

Level of evidence

III.

Available only for authorised users

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Title: Robotics versus personalized 3D preoperative planning in total knee arthroplasty: a propensity score-matched analysis
Authors: Kai Lei
LiMing Liu
PengFei Yang
Ran Xiong
Liu Yang
Rui He
Lin Guo
Publication date: 01-12-2022
Publisher: BioMed Central
Published in: Journal of Orthopaedic Surgery and Research / Issue 1/2022
Electronic ISSN: 1749-799X
DOI: https://doi.org/10.1186/s13018-022-03115-3

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Robotics versus personalized 3D preoperative planning in total knee arthroplasty: a propensity score-matched analysis

Abstract

Purpose

Methods

Results

Conclusion

Level of evidence

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusion

Level of evidence

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