Duloxetine for Pain in Older Adults With Knee Osteoarthritis (OA)

August 27, 2011 updated by: Anna Abou-Raya, University of Alexandria

Osteoarthritis (OA), a common disabling condition, is the commonest type of arthritis worldwide.Pain is the leading symptom and is often chronic in na. Current treatment options have had limited symptomatic effect and are associated with significant side effects. Duloxetine, a selective serotonin norepinephrine reuptake inhibitor has been demonstrated to have, besides its antidepressant properties, a centrally acting analgesic effect.

The aim of the present study was to investigate the efficacy of duloxetine in reducing pain in older adults with knee OA.

288 patients aged 65 years and above with ACR clinical and radiographic criteria of primary knee OA attending the outpatient clinic of our institution were enrolled in this study. All patients underwent a physical examination and where questioned about the number of flares. Exclusion criteria included any inflammatory, autoimmune, psychiatric illness and morbid obesity. Patients were randomized 1:1. One hundred and forty four received 60mg/day of duloxetine HCL and 144 received placebo together with their usual therapy for 16 weeks. The primary outcome measure was pain reduction. Secondary outcome measures included improvements in physical functioning scores. Pain was assessed using the Brief Pain Inventory (BPI) and Visual Analogue pain Scale, (VAS, 0-100 mm). Functional assessment using the self-reported physical function as measured with the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), WOMAC pain and stiffness scores and the Geriatric Depression Scale (GDS) was conducted. Alterations in dosage of analgesic/NSAID drugs used were recorded. Safety and tolerability were also assessed. Data was collected at baseline and at monthly intervals for 4 months. All staff involved in data collection was blinded to the treatment assignment groups.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

288

Phase

  • Not Applicable

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

  • Egypt
      • Alexandria, Egypt, 00203
        • Faculty of Medicine, University of Alexandria

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

50 years to 85 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • primary knee osteoarthritis

Exclusion Criteria:

  • inflammatory conditions
  • autoimmune disorders
  • psychiatric illness
  • morbid obesity

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: Single Group Assignment
  • Masking: Quadruple

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Pain reduction
Time Frame: 16 weeks
16 weeks

Collaborators and Investigators

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

Sponsor

University of Alexandria

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.

General Publications

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

November 1, 2010

Primary Completion (Actual)

June 1, 2011

Study Completion (Actual)

July 1, 2011

Study Registration Dates

First Submitted

August 19, 2011

First Submitted That Met QC Criteria

August 27, 2011

First Posted (Estimate)

August 30, 2011

Study Record Updates

Last Update Posted (Estimate)

August 30, 2011

Last Update Submitted That Met QC Criteria

August 27, 2011

Last Verified

August 1, 2011

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • alexmed116619163

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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