Last reviewed: September 29, 2026

Not in the ways that matter most to patients, as far as studies show so far.

In a robotic knee replacement, the surgeon still does the operation. A robotic arm or guidance system helps plan and make the bone cuts. It reliably places the parts closer to the plan, with fewer knees far off target.

That precision has not turned into a better knee. In a large trial where neither the patients nor the people assessing them knew which operation was done, there was no meaningful difference in how the knee felt a year later. A trial that followed patients for more than ten years found no difference in function, loosening or the need for a redo. Pooled studies agree. The American Academy of Orthopaedic Surgeons guideline reaches the same conclusion for the short term.

Large record studies found a slightly shorter hospital stay and fewer problems during that stay with the robot. Trials have not shown a clear difference in safety. National joint registries have found no fewer redo operations so far, though most follow patients for only a few years.

Whether some knees, such as badly deformed ones, gain more from a robot has not been tested.

In general:

  • For most patients, robotic and standard knee replacements give similar results.
  • More precise placement has not yet been shown to make a knee last longer.
  • Ask your surgeon which method they use most often.

Drafted with AI assistance from published sources, reviewed and edited by Babak Sheikh, MD.

Sources:

  • Parsons H, et al. Robotic-Arm-Assisted Versus Conventional Total Knee Replacement (RACER-Knee): A Pragmatic, Multicentre, Participant-Masked and Assessor-Masked, Superiority, Randomised Controlled Trial. Lancet. 2026. https://doi.org/10.1016/S0140-6736(26)00986-4
  • Kim YH, et al. Does Robotic-Assisted TKA Result in Better Outcome Scores or Long-Term Survivorship Than Conventional TKA? A Randomized, Controlled Trial. Clin Orthop Relat Res. 2020. https://doi.org/10.1097/CORR.0000000000000916
  • Klincke V, et al. Robot-Assisted Total Knee Arthroplasty Demonstrates Superior Radiological but Comparable Clinical Outcomes Compared to Conventional Techniques: A Meta-Analysis of Prospective Studies. Knee Surg Sports Traumatol Arthrosc. 2025. https://doi.org/10.1002/ksa.70007
  • Chen J, et al. Survivorship in Robotic Total Knee Arthroplasty Compared With Conventional Total Knee Arthroplasty: A Systematic Review and Meta-Analysis. Arthroplasty. 2025. https://doi.org/10.1186/s42836-025-00304-3
  • American Academy of Orthopaedic Surgeons. Surgical Management of Osteoarthritis of the Knee: Evidence-Based Clinical Practice Guideline. 2022. https://www.aaos.org/globalassets/quality-and-practice-resources/surgical-management-knee/smoak2cpg.pdf
  • Maman D, et al. In-Hospital Outcomes and Hospital Charges After Robotic-Assisted Versus Conventional Total Knee Arthroplasty: A 2016-2022 Nationwide Inpatient Sample Study. PLoS One. 2026. https://doi.org/10.1371/journal.pone.0346031
  • Kirchner GJ, et al. Robotic-Assisted TKA Is Not Associated With Decreased Odds of Early Revision: An Analysis of the American Joint Replacement Registry. Clin Orthop Relat Res. 2024. https://doi.org/10.1097/CORR.0000000000002783
  • Vink MC, et al. No Difference in Short-Term Revision Risk Between Robot-Assisted Total Knee Arthroplasty and Conventional Techniques: An Analysis of 79,115 Total Knee Arthroplasties in the Dutch Arthroplasty Register. The Knee. 2026. https://doi.org/10.1016/j.knee.2026.104632
  • Alakylä KJ, et al. Early Revision Rate in Robotic-Assisted Versus Conventional Total Knee Arthroplasty: A Prospective Cohort Study 2021-2023 From the Finnish Arthroplasty Register. Acta Orthop. 2026. https://doi.org/10.2340/17453674.2026.46462

This is general information about what published research shows. It is not medical advice and it is not about your situation. Reading it does not create a doctor-patient relationship with me. I am a retired orthopedic surgeon and I do not see patients. Talk with your own doctor before changing anything about your care. If something feels suddenly or seriously wrong, get medical care promptly rather than waiting.

This page is provided as is. I make no guarantee that it is accurate, complete or current, and medical evidence changes. Use of it is at your own risk.

Published by Clinical Evidence Media LLC. Full disclaimer and how these answers are researched: Disclaimer and how these answers are made