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1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesRobotic assistance can improve some measures of surgical precision, but current studies do not show a general, dependable improvement in pain, movement or implant survival compared with conventional hip or knee replacement. The findings differ by joint, robotic system and study design, so “no better” is too broad a verdict.
What “robotic” replacement means
In robot-assisted hip and knee replacement, the surgeon performs the operation and uses a robotic system to help plan or guide parts of it. The robot does not independently decide on or carry out the surgery. The comparison is therefore between surgical approaches and tools—not between a surgeon and an autonomous machine.
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Studies also measure different things. Alignment and implant placement describe technical accuracy; pain, function and range of motion describe outcomes patients may notice. Better performance on a technical measure does not by itself establish a meaningful improvement in recovery.
Knee replacement: alignment improves more consistently than patient outcomes
A 2023 systematic review in Acta Orthopaedica combined 12 randomized trials involving 2,200 adults having primary total knee replacement for osteoarthritis. Robotic assistance probably made little or no difference to WOMAC patient-reported outcomes: the mean difference was −0.35 (95% confidence interval −0.78 to 0.07). The pooled difference in range of motion was also small and uncertain: −0.73 degrees (95% CI −7.5 to 6.0).
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The same review found better alignment measures with robotic assistance. It reported fewer deviations from the target mechanical alignment (risk ratio 0.43, 95% CI 0.27–0.67) and a mean reduction of 0.94 degrees in deviation from neutral alignment (95% CI 0.73–1.1 degrees). The review authors cautioned that this radiographic precision advantage might not be clinically meaningful. Evidence on complications and revision was insufficient for firm conclusions.
More recent randomized trial findings
A small randomized trial published online in October 2025 and assigned to a 2026 journal issue compared robotic and conventional total knee replacement in 60 patients. At six months, the groups had the same reported average times on the Timed Up and Go test (11 seconds) and stair-climb test (15 seconds); they also did not differ on KOOS pain or hip-knee-ankle angle. Its sample size, use of one system and short follow-up limit how far the result can be generalized.
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A separate UK randomized trial report described 339 patients treated by 33 surgeons at 10 hospitals. At one year, recovery, mobility and pain were reported as similar between groups. HealthDay, republishing its report through Powers Health, said robotic procedures took about 11 minutes longer and cost about $1,300 more; that secondary report does not establish the precise basis for the cost figure.
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Hip replacement: results depend on which robot and evidence are considered
A 2024 systematic review and meta-analysis of randomized trials of robotic-assisted versus conventional total hip replacement described the high-quality evidence for important clinical outcomes as limited. It found only a trivial difference in femoral stem alignment, with a confidence interval that included no effect. That technical measure does not establish a patient-perceived benefit.
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A 2025 review in the Journal of Orthopaedic Surgery and Research focused specifically on MAKO robotic-arm-assisted hip replacements for osteoarthritis and pooled 20 comparative studies. It reported greater improvement with MAKO assistance on the Forgotten Joint Score (weighted mean difference 8.7, 95% CI 2.7–14.8) and Oxford Hip Score (1.5, 95% CI 0.1–2.8). The difference in Harris Hip Score was not statistically significant (2.2, 95% CI −0.3 to 4.7). Nor did the review find significant differences in operation duration, leg-length discrepancy or complications. These results apply to the studies and patient group reviewed; they do not establish that every robotic platform produces the same results or that every patient will notice an improvement.
What UK registry comparisons add—and what they cannot prove
An October 3, 2026 Hindustan Times report described two studies using UK National Joint Registry records for operations performed in public and private hospitals from 2018 to 2024. It reported 666,283 hip replacements, including 10,203 robotic procedures, and 697,145 total or partial knee replacements, including 22,111 robotic procedures. After matching patients and procedures on factors such as age, sex, BMI, diagnosis, fitness, implant type and surgeon volume, the report said the studies found no difference in implant survival, revision risk or intraoperative complications over an average 2.5 years of follow-up. It also reported no difference in survival after hip replacement.
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These are observational comparisons, not randomized assignments. Matching measured characteristics cannot rule out differences in unmeasured factors, and an average follow-up of 2.5 years cannot settle questions about long-term implant survival. The cohort counts and findings here are as reported by Hindustan Times; they should not be read as proof that the procedures are causally equivalent.
How to weigh the comparison
- Separate technical accuracy from how you feel and function. Alignment and placement may matter, but they are not substitutes for patient-reported pain, movement or function.
- Check which joint and system the evidence covers. A result for robotic knee surgery cannot automatically be applied to hip surgery, and a MAKO-specific finding is not evidence for every platform.
- Look at study design and follow-up. Randomized trials can better compare assigned approaches; registry studies can include far larger groups but remain vulnerable to confounding. Short follow-up cannot answer every question about revisions or implant longevity.
- Consider whether a measured difference is meaningful to patients. A statistically detectable change in alignment or a score is not automatically large enough to be noticed or to change care.
Questions to discuss with an orthopaedic surgeon
- How often do you perform this specific hip or knee replacement, and how much experience do you have with the proposed robotic system?
- Which outcomes matter most in my case, and what evidence supports using this system for those outcomes?
- Is there an additional cost for the robotic approach, and what exactly does that charge cover?
- How do my health, anatomy and treatment goals affect the choice of approach?
The available comparisons do not establish one approach as the right choice for every patient. A discussion about the surgeon’s experience, the outcomes important to you and any extra cost is more useful than treating “robotic” as a guarantee of a better result.
Quick Recap
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