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PainNCT00135889

Continuous Femoral Nerve Block Following Total Knee Replacement

A study testing Femoral perineural infusion in people with Pain, run by National Institute of General Medical Sciences (NIGMS) at 2 sites in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this study is to determine if putting local anesthetic-or numbing medication-through a tiny tube next to the nerves that go to the knee will improve pain control during physical therapy, and ultimately improve the results of surgery. Read more about this study

Who is it for?
Ages 18 to 80 years
Conditions the study is for
Pain
What is being tested?
Femoral perineural infusion
Type of treatment
Injection or infusion
How many people
50 participants
Where
2 sitesUnited States
Study dates
Jan 2005to Jul 2008
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 80 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patients undergoing unilateral, primary total knee arthropathy (TKA)
  • 18-80 years of age
  • Be able to understand the possible local anesthetic-related complications, study protocol, and care of the catheter and infusion pump system and are already planning on having a perineural catheter placed for postoperative analgesia

Who cannot join

  • Any contraindication to femoral block/catheter
  • Any comorbidity which results in moderate or severe functional limitation (American Society of Anesthesiologists [ASA] physical status >2)
  • Baseline oxygen saturation < 96% on room air
  • Known hepatic or renal insufficiency (creatinine level > 1.5 mg/dL)
  • Allergy to study medications (other than nonsteroidal anti-inflammatory agents [NSAIDs] and acetaminophen)
  • Inability to communicate with the authors
  • Morbid obesity (body mass index [BMI]>40 kg/m2)
  • History of opioid abuse or chronic regular opioid use (use within the 2 weeks prior to surgery and duration of use > 4 weeks)

Trial locations and contacts

2 sites in 1 country.

United States2 sites
  • University of Florida

    Gainesville, Florida, 32610-0254

  • University of California San Diego

    La Jolla, California, 92037

Other trials in United States

About this study

Official title: Improving Postoperative Rehabilitation Following Total Knee Arthroplasty With Perineural Local Anesthetic Infusion

The purpose of this study is to determine if putting local anesthetic-or numbing medication-through a tiny tube next to the nerves that go to the knee will improve pain control during physical therapy, and ultimately improve the results of surgery. It will also determine if patients having knee replacement surgery may receive the same or better pain control at home compared with staying in the hospital, and if this improves their experience following surgery.

Read the detailed description

What procedures would be done as part of your normal clinical care (even if you did not participate in this research)?

You will have some monitors placed (such as a blood-pressure cuff) and be given some medicines through your intravenous (IV) line to make you very sleepy. The anesthesiologist will then place a nerve block so that much of your knee (not all) will be numb. At the same time, the anesthesiologist will place a tiny tube, called a catheter, near your nerves that will be used after the surgery is over. You will still go to sleep for the surgery, but you will be much more comfortable when you wake up because the numbing medicine will be working to take away much of the pain. If you are not part of this study, you would go from the recovery room to a room in the hospital for 3-5 days, and your catheter would be removed the morning following surgery. After your catheter was removed, you would depend on oral and IV opioids-or pain medicine-to control your surgical pain. You would go home with only oral opioids since IV opioids cannot be provided at home.

What procedures will be done only because you are participating in this research study?

From the recovery room you will go to the Clinical Research Center (CRC) which is a special part of the hospital where research is undertaken. During your stay at the CRC you will have the ability to push a button on a small infusion pump to give yourself more medicine through the tube to your nerves if you have pain. If this does not help enough, you will take pain pills to help. And if this does not help enough, you will be given opioids (strong pain medicine like morphine) into your IV. Each morning after surgery, the medicine in your little infusion pump will be replaced by either (1) more medicine, or (2) salt water, or "normal saline". The pharmacist will determine this randomly-like flipping a coin-and neither you nor the doctors/nurses caring for you will know which you have. This is to keep any of us from inadvertently/unconsciously affecting the results of the study. However, if you have pain that is not controlled with pain pills, you will be switched back to the regular medicine to improve your comfort until the following morning. You will undergo physical therapy and following this you will be checked to see if you are ready to go home. When you are ready to go home beginning on the third day after surgery, you may go home with the little infusion pump and the tube that goes to the nerves of your knee. One of the study physicians will call you each night to ensure that you are comfortable for the first 7 nights after your surgery, and you will be given the phone and pager numbers of a physician available for you to contact 24 hours/day, 7 days/week. When the medicine runs out or in the fourth evening following surgery, whichever comes first, your catheter will be removed. The pump is disposable, so it can be thrown away. A physician will call you the two nights after the catheter comes out to ensure that you are comfortable.

Conditions
Pain
Being tested
Femoral perineural infusion
Keywords
Total Knee Arthroplasty secondary to osteoarthritis
Medical subject headings
Pain

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Femoral perineural infusionDrug

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Distance of ambulation in the afternoon following surgery

  2. Time from surgical stop until three discharge criteria are met

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted26 Aug 2005 (estimated)
  2. Study startJan 2005
  3. Primary completionJul 2008
  4. Study completionJul 2008

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Enrolment
50 participants
IDs, dates and publications
ClinicalTrials.gov ID
NCT00135889
Sponsor's protocol ID
560-2003
Other IDs
GCRC 582, GCRC Grant RR00082
Status last verified
Oct 2009
First submitted
24 Aug 2005
Last updated
8 Oct 2009
Results posted
No
Data monitoring committee
Yes

Publications

  • Ilfeld BM, Gearen PF, Enneking FK, Berry LF, Spadoni EH, George SZ, Vandenborne K. Total knee arthroplasty as an overnight-stay procedure using continuous femoral nerve blocks at home: a prospective feasibility study. Anesth Analg. 2006 Jan;102(1):87-90. doi: 10.1213/01.ane.0000189562.86969.9f.

    PubMed 16368810
  • Ilfeld BM, Le LT, Meyer RS, Mariano ER, Vandenborne K, Duncan PW, Sessler DI, Enneking FK, Shuster JJ, Theriaque DW, Berry LF, Spadoni EH, Gearen PF. Ambulatory continuous femoral nerve blocks decrease time to discharge readiness after tricompartment total knee arthroplasty: a randomized, triple-masked, placebo-controlled study. Anesthesiology. 2008 Apr;108(4):703-13. doi: 10.1097/ALN.0b013e318167af46.

    PubMed 18362603
  • Ilfeld BM, Meyer RS, Le LT, Mariano ER, Williams BA, Vandenborne K, Duncan PW, Sessler DI, Enneking FK, Shuster JJ, Maldonado RC, Gearen PF. Health-related quality of life after tricompartment knee arthroplasty with and without an extended-duration continuous femoral nerve block: a prospective, 1-year follow-up of a randomized, triple-masked, placebo-controlled study. Anesth Analg. 2009 Apr;108(4):1320-5. doi: 10.1213/ane.0b013e3181964937.

    PubMed 19299806

Questions about this trial

What is this clinical trial studying?

A study testing Femoral perineural infusion in people with Pain, run by National Institute of General Medical Sciences (NIGMS) at 2 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 8 Oct 2009. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Distance of ambulation in the afternoon following surgery. The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00135889, which also lists 3 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 Oct 2009.

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