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Effects of Nerve Block on Knee Function After Knee Replacement

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified July 2006 by Johns Hopkins University.
Recruitment status was:  Recruiting
Information provided by:
Johns Hopkins University Identifier:
First received: July 27, 2006
Last updated: NA
Last verified: July 2006
History: No changes posted
Early physical therapy after knee surgery is very painful on top of pain from surgery. Pain following surgery can limit recovery. One way to treat pain is by giving intravenous (IV) pain medication with morphine. Another method is to use a “nerve block” which involves placing a thin catheter (tube) into the lower back near the nerves that sense pain in the knee and give a local anesthetic to numb the nerves. Sometimes both methods are used together. This research is being done to determine whether nerve blocks with a local anesthetic improve knee recovery in addition to providing pain relief as compared to IV pain medicine alone

Condition Intervention
Postoperative Pain Procedure: Nerve block

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double
Official Title: Effects of Continuous Lumbar Plexus Nerve Block on Functional Restoration and Outcome After Unilateral Total Knee Arthroplasty

Further study details as provided by Johns Hopkins University:


Ages Eligible for Study:   21 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   All

Inclusion Criteria:

  • Age 21-80 year old
  • ASA Physical Status ASA I and II
  • Mentally competent
  • Intellectually competent
  • Body mass index <35
  • No severe cardiac diseases
  • No severe pulmonary diseases
  • Unilateral knee disease
  • No other lower extremity joint disease
  • No chronic narcotic therapy or illicit drug use

Exclusion Criteria:

  • Age <21 or >80 year old
  • ASA Physical Status >ASA II
  • Mentally incompetent
  • Intellectually incompetent or cognitively impaired
  • Non-English speaking patient
  • Worker’s compensation patient
  • Body mass index > 35
  • Bilateral knee disease
  • Has other lower extremity joint disease
  • Severe cardiac diseases
  • Severe pulmonary diseases
  • Chronic narcotic therapy or illicit drug use
  • Pregnancy
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00358241

Contact: A. Rollingson 410-550-0942

United States, Maryland
Johns Hopkins Bayview Medical Center Recruiting
Baltimore, Maryland, United States, 21224
Contact: A Rollingson    410-550-0942      
Sponsors and Collaborators
Johns Hopkins University
Principal Investigator: J Hang, MD, PhD Johns Hopkins Medicine, Johns Hopkins University
  More Information Identifier: NCT00358241     History of Changes
Other Study ID Numbers: 04-03-05-05
Study First Received: July 27, 2006
Last Updated: July 27, 2006

Keywords provided by Johns Hopkins University:
Nerve block, postoperative pain, analgesia

Additional relevant MeSH terms:
Pain, Postoperative
Neurologic Manifestations
Nervous System Diseases
Postoperative Complications
Pathologic Processes
Signs and Symptoms processed this record on September 21, 2017