Surgeon vs. anesthesiologist: who does the better knee numbing?
NCT ID NCT07506629
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests if a surgeon can numb the knee during replacement surgery as effectively as an anesthesiologist using ultrasound. 48 adults having both knees replaced will get one method on each knee. The goal is to see if the surgeon's technique provides equal pain relief and recovery.
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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 48 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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May 2026
An estimate. Start dates often move.
- Expected to finish
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Mar 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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60 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: * Adult patients aged 19 years or older * Patients scheduled for bilateral total knee arthroplasty * Patients who provide written informed consent Exclusion Criteria: * Refusal to participate or inability to provide informed consent * Neurological or psychiatric conditions affecting cooperation (e.g., dementia, delirium) * Pre-existing neurological or anatomical abnormalities of the lower extremities * Chronic opioid use or opioid dependence * Coagulation disorders or contraindications to nerve block * Pregnancy * Cases in which ultrasound evaluation is technically not feasible
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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 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.
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Other studies related to the condition(s) this trial covers.
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