ArticleInternational orthopaedics2024
Preoperative evaluation of femoral and tibial sagittal alignment in robotic-assisted and conventional total knee arthroplasty and consequences for practice.
Article in International orthopaedics, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.
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Who cites it
7 citing papers in PubMed, 1 synthesis or guideline pooled it.
- What Are the Optimal Sagittal Alignments in Primary Total Knee Arthroplasty: A Systematic Review and Meta-Analysis.Orthopaedic surgery · 2026Pooled it
- Better radiological outcomes but equal clinical function of a novel knee arthroplasty robot system: a prospective randomized controlled trial.International orthopaedics · 2025Trial
- Comparative study of outcomes with total knee arthroplasty: medial pivot prosthesis vs posterior stabilized implant. Prospective randomized control.International orthopaedics · 2025Trial
- Comparison of early postoperative activity-related pain burden after conventional, navigation-assisted, and robotic-assisted total knee arthroplasty: a retrospective cohort study based on 24-72 h pain area under the curve.Journal of robotic surgery · 2026Article
- Real-World Outcomes of Robotic Total Knee Arthroplasty: Five Years' Experience in a Non-Academic Center.Journal of personalized medicine · 2025Article
- A comparative study of early postoperative pain: robotic-assisted versus conventional total knee arthroplasty.International orthopaedics · 2025Article
- Sagittal accuracy and functional impact of tibial slope in imageless robotic-assisted Total Knee Arthroplasty.International orthopaedics · 2025Article
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10 authors.
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No grant is acknowledged in the PubMed record.
Abstract
purposeRobot-assisted total knee arthroplasty (TKA) was developed to improve the precision and accuracy of implant placement in conventional TKA. However, the angular differences between referenced axes in robot-assisted TKA and conventional TKA remain unclear. The aim of this study was to investigate the angular differences in sagittal alignment between robot-assisted TKA and conventional TKA for both the femur and the tibia and to discuss their clinical implications.
methodsWe conducted a retrospective analysis of data from 100 patients (97 patients) who underwent computed tomography (CT) for Mako TKA. We measured the angle between the robot femoral axis (RFA) and conventional femoral axis (CFA) in the sagittal plane and the angle between the robot tibial axis (RTA) and the conventional tibial axis (CTA). Angles were compared between the sexes. Correlation analysis was conducted between the angles and height.
resultsIn the sagittal plane, the mean RFA-CFA angle was 2.2° ± 1.6°, and the mean RTA-CTA angle was 2.3° ± 1.6°. There were no significant differences between the two angles among males and females (p > 0.05). There was a correlation between the RFA-CFA angle and RTA-CTA angle (p < 0.001, r = 0.33), and there was a correlation between height and the combination of the RFA-CFA angle and RTA-CTA angle (p = 0.03, r = 0.22).
conclusionThere are angular differences between the axes referenced by robot-assisted TKA and those referenced by conventional TKA, which may be influenced by patient height. Correctly understanding these differences is crucial when evaluating the implant position and surgical outcomes after robot-assisted TKA. Furthermore, caution should be taken when assessing the flexion-extension angle of the knee since the angles displayed in the Mako system are different from the angles measured with intramedullary anatomical axes. After all, sagittal alignment principles differ between robot-assisted and conventional TKA; however, further studies are required to determine which principle is more appropriate or to modify these principles.
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