Local Anesthetic in Total Knee Arthroplasty (TKA): Volume Versus Concentration

November 10, 2009 updated by: Lundbeck Foundation

The Volume-concentration Relationship of Analgesic Efficacy With Intra-capsular Local Anesthetic in Total Knee Arthroplasty: a Randomized, Double-blind, Cross-over Trial.

In a randomized, double-blind, cross-over trial, 48 patients scheduled for total knee arthroplasty with placement of an intracapsular catheter will be randomized to receive bolus injection of ropivacaine in high volume/low concentration (20 ml, 5 mg/mL) or low volume/high concentration (10 mL, 10 mg/mL) 6 and 24 hours postoperatively, and pain will be assessed at rest and with mobilization for 2 hours after injections.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

48

Phase

  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Denmark
      • Copenhagen, Denmark
        • Lundbeck Centre for fast-track hip and knee arthroplasty

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

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Scheduled for total knee arthroplasty
  • Able to give informed oral and written consent to participate

Exclusion Criteria:

  • Treatment with opioids or steroids, rheumatoid arthritis or other immunological diseases
  • History of stroke or any neurological or psychiatric disease potentially influencing pain perception (e.g. depression, diabetic neuropathy etc.)
  • Allergies to any of the drugs administered.

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: Crossover Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: low volume local anesthetic
bolus injection of local anesthetic in low volume/high concentration (10 mL, 10 mg/mL)
Drug: 10 mL ropivacaine 10 mg/mL
Experimental: high volume local anesthetic
bolus injection of ropivacaine in high volume/low concentration (20 ml, 5 mg/mL)
Drug: 20 mL ropivacaine 5 mg/mL

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
postoperative pain
Time Frame: 32 hours postoperative
32 hours postoperative

Collaborators and Investigators

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

Sponsor

Lundbeck Foundation

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

June 1, 2009

Primary Completion (Actual)

October 1, 2009

Study Completion (Actual)

October 1, 2009

Study Registration Dates

First Submitted

November 10, 2009

First Submitted That Met QC Criteria

November 10, 2009

First Posted (Estimate)

November 11, 2009

Study Record Updates

Last Update Posted (Estimate)

November 11, 2009

Last Update Submitted That Met QC Criteria

November 10, 2009

Last Verified

November 1, 2009

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • H-D-2009-016

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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