New study aims to find best pain relief for knee replacement patients
NCT ID NCT07561333
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares two types of nerve blocks to control pain after total knee replacement. 78 adults will receive one of two combinations of ultrasound-guided injections near the knee. The goal is to see which approach reduces pain and the need for opioid painkillers in the first 24 hours 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 78 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Oct 2025
- Expected to finish
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Nov 2026
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 to 80 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: * Scheduled for primary total knee arthroplasty surgery * ASA physical status classification I-III * Hemodynamically stable * Age ≥ 18 years and ≤ 80 years * BMI ≤ 35 kg/m² * Signed written informed consent form Exclusion Criteria: * Revision total knee arthroplasty surgery * Simultaneous bilateral total knee arthroplasty * BMI \> 40 kg/m² * ASA physical status classification 4-5 * Inability to perform NRS pain scoring * Known allergy to local anesthetics * Pregnancy or breastfeeding * Age \< 18 or \> 80 years * Uncontrolled anxiety disorder * Alcohol or drug dependency * Neuromuscular disease or peripheral nerve disease * High-dose opioid use within 3 days prior to surgery * Widespread chronic pain syndrome * Diabetes mellitus * Hepatic or renal insufficiency * Coagulation disorders * Current use of anticoagulant medications * Infection at the peripheral nerve block needle insertion site * 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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Hitit University
RECRUITINGÇorum, Centre, 19100, Turkey (Türkiye)
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Other studies related to the condition(s) this trial covers.
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- Can a nerve block quiet the brain during gallbladder surgery?