Robot knee surgery showdown: can skipping the scan still deliver?
NCT ID NCT07522489
First seen Jun 27, 2026 · Last updated Aug 14, 2026 · Updated 4 times
Summary
This study compares two robot-assisted knee replacement methods for people with severe knee arthritis. One method uses a CT scan to plan the surgery (image-based), while the other uses a simpler approach without a scan (imageless). The goal is to see if the imageless method works just as well for improving pain and function. About 146 participants will be tracked for 12 months after surgery.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 146 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Aug 2026
- Expected to finish
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Jan 2029
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Symptomatic, radiologically confirmed advanced osteoarthritis of the knee. 2. Patients referred for primary robotic-assisted total knee arthroplasty. 3. Patients in whom a correctly performed radiograph with designated sensors has confirmed the possibility of performing robotic-assisted total knee arthroplasty with image-based navigation. 4. Patients capable of giving informed consent to participate in the study and willing to attend all follow-up visits. Exclusion Criteria: 1. No informed consent for the surgery. 2. No informed consent for taking part in the study. 3. Pregnancy. 4. Active infections. 5. Diagnosed comorbidities: autoimmune arthritis, malignant tumors, serious neurological disorders affecting a reliable functional outcome measurement (e.g., severe stroke, severe Parkinson's disease).
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Department of Orthopedics and Locomotor Traumatology, Medical University of Warsaw
RECRUITINGWarsaw, Mazovian, 02-005, Poland
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Two nerve blocks, one goal: silencing pain after knee replacement
- Light weights, tight cuff: a new way to prep knees for surgery?
- Inside or outside the knee: which steroid injection spot eases arthritis pain better?
- Can a new knee implant design offer better Long-Term relief?
- Can your own blood cells boost knee pain relief?