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Which anesthesia works best for stiff knees?

NCT ID NCT07348614

Symptom relief Sponsor: Duke University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study compares spinal anesthesia to general anesthesia for a procedure that loosens stiff knees after replacement surgery. About 128 adults will take part to see which method improves knee movement and reduces pain better. The goal is to find the best way to make the procedure more comfortable and effective.

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

Phase 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Participants

About 128 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jun 2026

Expected to finish

Sep 2027

An estimate. End dates often move.

Lead sponsor

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

18 to 75 years

Sex

Anyone

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion: 1. Patients ≥18 years presenting for a manipulation of knee joint under anesthesia. 2. ASA Classification I - III. 3. English speaking patients. Exclusion: 1. ASA 4 or 5 2. Daily chronic opioid use (over 3 months of continuous opioid use). 3. Inability to communicate pain scores or need for analgesia. 4. Infection at the site of block placement 5. Age under 18 years old or greater than 75 years old 6. Pregnant women (as determined by point-of-care serum bHCG) 7. Intolerance/allergy to local anesthetics 8. Weight \<50 kg 9. Suspected, or known addiction to or abuse of illicit drug(s), prescription medicine(s), or alcohol within the past 2 years. 10. Uncontrolled anxiety, schizophrenia, or other psychiatric disorder that, in the opinion of the investigator, may interfere with study assessments or compliance. 11. Current or historical evidence of any clinically significant disease or condition that, in the opinion of the investigator, may increase the risk of surgery or complicate the subject's postoperative course. 12. BMI \>50 kg/m2. 13. Allergy or contraindication to local anesthetics or any component of the multimodal analgesic regimen (NSAIDs and acetaminophen) 14. Contraindication to spinal injection

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Knee stiffness after total knee arthroplasty

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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

  • Duke University Health System

    RECRUITING

    Durham, North Carolina, 27705, United States