2026 · Journal of Knee Surgery
Does Better Balance in Robotic Surgery Translate into Patient-reported Benefits?
Varus–valgus range of motion decreased after surgery in all 3 groups. Postoperative range was greatest in the manual MA group, at 3.7° ± 1.4° (P = 0.048).
It's a comparison of research.
64 procedures using the same implant were compared across 3 groups. Coronal range of motion was smaller in the robot-assisted groups, but between-group differences in 1-year WOMAC and FJS were not demonstrated.
Explanatory schematic
Abstract commentary
Participants and Methods
Main Findings
The point of reading on surgery
Limitations
Let's put it briefly.
What did this study confirm?
Varus–valgus range of motion decreased after surgery in all 3 groups. Postoperative range was greatest in the manual MA group, at 3.7° ± 1.4° (P = 0.048).
Can it be applied directly to individual patients' treatment decisions?
This is a small, nonrandomized comparison with 1-year results. Improvement in symmetry, a surrogate measure, does not establish long-term clinical superiority.
Keywords
- Robotic-assisted total knee arthroplasty
- Mediolateral balance
- Short-term outcomes
- TKA
- robotics
- functional alignment
- mechanical alignment
- gait
Abstract · Original text
Do Weon Lee, Joon Young Lee, Hyuk-Soo Han, Du Hyun Ro. Robotic Arm-Assisted Total Knee Arthroplasty Achieves More Symmetrical Mediolateral Balance without Significant Clinical Differences in the Short Term. The journal of knee surgery. 2026. doi:10.1055/a-2851-0619.
Excerpt from the original abstract
With the advent of robotic arm-assisted total knee arthroplasty (TKA), a different approach known as the functional alignment (FA) has been newly suggested. Studies have…The original paper.
Robotic Arm-Assisted Total Knee Arthroplasty Achieves More Symmetrical Mediolateral Balance without Significant Clinical Differences in the Short Term
Do Weon Lee, Joon Young Lee, Hyuk-Soo Han, Du Hyun Ro
Journal of Knee Surgery · 2026