Knee surgery pain relief showdown: which block works best?
NCT ID NCT07433803
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares two types of nerve blocks (iPACK and BiFeS) to see which one controls pain better after total knee replacement. One hundred adults having knee surgery will receive one of the two blocks with a numbing medicine (bupivacaine). Researchers will measure pain scores, how much extra pain medicine is needed, and how quickly patients can get up and move after surgery.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- bupivacaine
- What this could lead to
- If one block works better, it could mean less pain and quicker recovery after knee replacement surgery.
- What could go wrong
- This is a small, early-stage trial (100 people) comparing two similar techniques. It may not show a clear winner, and results may not apply to all patients.
This is an AI summary of the original study and may miss details. Read our disclaimer.
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 100 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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Sep 2026
An estimate. End dates often move.
- Lead sponsor
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A government agency
The lead sponsor is a government body.
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 to 75 years
- 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.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Patients scheduled for unilateral total knee arthroplasty * Patients aged between 18 and 75 years * Patients with ASA physical status I-III Exclusion Criteria: * Patients with neuropsychiatric disorders * Patients with obesity (BMI \> 30) * Presence of local infection at the site where the block will be performed * Patients with coagulation disorders * Patients with uncontrolled diabetes mellitus * Opioid dependence * History of allergy to local anesthetic agents * Refusal to participate in the study
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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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Soma State Hospital
Manisa, Soma, 45500, Turkey (Türkiye)
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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