Local Injection of Local Anesthetic 24 Hours After Knee Replacement Surgery May Decrease Pain for Several More Hours

December 14, 2017 updated by: Wolfgang Fitz, Brigham and Women's Hospital

Local Injection of Local Anesthetic 24 Hours After Knee Replacement Surgery

The purpose of this study is to determine if an additional injection of local anesthetic immediately prior to removal of the local anesthetic infiltration catheter on postoperative day one is effective in increasing pain reduction, patient satisfaction or outcome measures following total knee replacement (TKR). It is hypothesized that an additional injection of 30ml of .5% bupivacaine solution immediately before infiltration catheter removal will provide pain reduction, patient satisfaction and outcome measures equal or superior to catheter removal with no additional injection.

Patients who are undergoing unilateral total knee replacement (TKR) and choose to participate will be randomly assigned to a treatment group.Patients in group one (treatment group) will receive a 30ml dose of .5% bupivacaine solution injected into the local anesthetic infiltration catheter immediately prior to its removal on postoperative day one. Patients in group two (control group) will receive no additional medication during local anesthetic infiltration catheter removal.

Study Overview

Status

Completed

Detailed Description

The purpose of this study is to determine if an additional injection of local anesthetic immediately prior to removal of the local anesthetic infiltration catheter on postoperative day one is effective in increasing pain reduction, patient satisfaction or outcome measures following total knee replacement (TKR). It is hypothesized that an additional injection of 30ml of .5% bupivacaine solution immediately before infiltration catheter removal will provide pain reduction, patient satisfaction and outcome measures equal or superior to catheter removal with no additional injection. The target enrollment for this study is 50 participants, 25 in each of groups one and two.

Patients who are undergoing unilateral total knee replacement (TKR) at Brigham and Women's Faulkner Hospital and meet all eligibility criteria will be informed about the study and asked if they would like to participate. Upon agreement, patient's consent will be obtained and they will be randomly assigned to a treatment group. Patients in group one (treatment group) will receive a 30ml dose of 0.5% bupivacaine solution injected into the local anesthetic infiltration catheter immediately prior to its removal on postoperative day one. Patients in group two (control group) will receive no additional medication during local anesthetic infiltration catheter removal.

Members of both groups will be asked to complete Visual Analog Scale (VAS) pain and satisfaction surveys and also to track daily narcotic pain medication consumption during the first week postoperatively. Measures of swelling in the operative knee will be collected for members of both groups at the first routine postoperative appointment approximately one week after surgery. Swelling will be measured using a Perometer which calculates the total volume of the extremity in cubic centimeters (Pero-System, Wuppertal, Germany). Proprioception will be measured using a SD Balancer (Biodex Medical Systems, Shirley, NY) which calculates the the overall stability index (OSI) and compares it to age standardized data. Quadriceps strength using a handheld dynamometer. Outcome measures will be collected for members of both groups prior to surgery and at the second routine postoperative appointment between 6 weeks after surgery. Swelling will be also measured at the first post-operative visit 1 week after surgery. These data measures, as well as any complications will be recorded and used for analysis at the completion of the study.

The Principal Investigator (PI) will review all pain, satisfaction, narcotic usage and proprioception data on a weekly basis with the research assistant (RA) as it is collected. These checks will help to ensure validity and patient safety. Privacy and confidentially will be assured by using codes as deidentifiers in place of identifying information on any data sheets used in analysis. Data which identifies the patient will be made available only to investigators and stored only in a private folder on department computers protected with a firewall. No data will be shared outside of Partners. Adverse events will be promptly reported to the PHRC as per PHRC rules.

Study Type

Interventional

Enrollment (Actual)

50

Phase

  • Not Applicable

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

16 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • At least 18 years of age
  • Undergoing unilateral knee replacement
  • If female, not pregnant
  • Agree to participate in the follow-up appointment
  • Understand and sign the informed consent form

Exclusion Criteria:

• Bilateral TKA planned

  • Use of narcotic medication before surgery
  • Any other surgery within the three months prior to TKR
  • Inflammatory arthritis
  • Any chronic pain conditions or problems, including but not limited to chronic back pain, fibromyalgia or multiple sclerosis
  • Osteoarthritis of the non-operative knee
  • Osteoarthritis of one or both hips

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Injection
Will receive injection of 30ml of .5% bupivacaine solution prior to catheter removal
Injection of local anesthetic immediately prior to catheter removal, 24 hours postop.
Other Names:
  • marcaine
Active Comparator: No Injection
Will not receive injection of bupivacaine prior to catheter removal
No injection of local anesthetic immediately prior to catheter removal, 24 hours postop.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Pain Assessed Using the VAS 0-10 Pain Scale
Time Frame: 7 days
Pain will be assessed using the VAS 0-10 pain scale. 0 is no pain and 10 in worst imaginable pain.
7 days

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Pain Med Consumption Assessed Using Questionnaire/Hospital Records
Time Frame: 2 days
Questionnaire/Hospital Records - While patients are in the hospital, pain medication consumption will be tracked in their electronic medical record. At home, patients will be asked to keep a log of pain medication consumption. They will be asked to record this information on a questionnaire at their first post-operative visit.
2 days
Pain Med Consumption Assessed Using Questionnaire/Hospital Records
Time Frame: 7 days
Total pain medications consumed by the patient, determined through the patients' own records in the questionnaire as well as hospital records of pain med administration and prescription.
7 days
Swelling Measured Using a Perometer
Time Frame: 7 days
Swelling in the affected TKR joint, as measured by a perometer.
7 days
Proprioception Measured Using a SD Balancer
Time Frame: 7 days
Proprioception measured after surgery, as measured by an SD balancer.
7 days
Quadriceps Strength Measured Using a Biodex Handheld Dynamometer"
Time Frame: 7 days
Quadriceps strength after surgery, as measured by a Biodex handheld dynamometer.
7 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

October 5, 2015

Primary Completion (Actual)

March 22, 2016

Study Completion (Actual)

December 9, 2016

Study Registration Dates

First Submitted

January 28, 2015

First Submitted That Met QC Criteria

April 17, 2015

First Posted (Estimate)

April 20, 2015

Study Record Updates

Last Update Posted (Actual)

January 12, 2018

Last Update Submitted That Met QC Criteria

December 14, 2017

Last Verified

December 1, 2017

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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