CClinicalTrials.gg
CompletedNCT04532684Updated Jan 25, 2021

Comparison of the Efficacy of Duloxetine and Pregabalin in Patients With Knee Osteoarthritis With Mix Type Pain

A Phase 4 interventional study of Duloxetine and Pregabalin in Knee Osteoarthritis, sponsored by Fatih Sultan Mehmet Training and Research Hospital. Completed. Open to participants aged 40 Years to 69 Years. Per ClinicalTrials.gov, last updated 2021-01-25.

Sponsored by Fatih Sultan Mehmet Training and Research Hospital · Phase 4, Interventional, and Treatment

From the registry’s dates

  • Registered 3 years 10 months after the study started (first participant enrolled Oct 2016, registered Aug 2020).
Phase
Phase 4
Study type
Interventional
Enrollment
66
Allocation
Randomized
Ages
40 Years to 69 Years
Sex
All
01

Study summary

Osteoarthritis (OA) is a common degenerative joint disorder associated with chronic pain at older age.It is known that patients with osteoarthritis experience nociceptive and neuropathic pain to varying degrees. Addition of molecules targeting neuropathic pain to conventional therapy has been shown to improve treatment response in the management of osteoarthritis.The aim of our study is to evaluate the effect of duloxetine and pregabalin on pain, functional capacity, quality of life, depression, anxiety and sleep patterns in knee osteoarthritis.

Read the detailed description

A total of 66 patients (aged 40-69) with knee osteoarthritis were randomized into two treatment groups to receive either duloxetine 60mg/day or pregabalin 300mg/day. The patients were evaluated before and one month after treatment and three months after treatment using the visual analog scale (VAS-pain), Neuropathic Pain Diagnostic Questionnaire (DN4), Short Form-36 (SF-36) Questionnaire, Western Ontario and McMaster University Osteoarthritis İndeks (WOMAC), Beck Depression Scale (BDS), Beck Anxiety Akalası (BAS), Pittsburg Sleep Quality Index (PSQI).

02

Conditions studied

  • Knee Osteoarthritis

Keywords

  • Knee osteoartrhritis
  • Duloxetine
  • Pregabalin
  • Pain
03

In context

Osteoarthritis

4,398 studies on the registry are indexed under Osteoarthritis; 582 are open to participants now.

This study's enrollment of 66 is close to the median of 70 across 3,440 interventional studies indexed under Osteoarthritis.

Browse Osteoarthritis studies →

Lead sponsor

Fatih Sultan Mehmet Training and Research Hospital is the lead sponsor of 118 studies on the registry; 34 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
40 Years to 69 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Aged 40-69
  • Diagnosed with knee osteoarthritis according to the American College of Rheumatology (ACR) criteria
  • Grade 2-3 knee osteoarthritis according to Kellgren-Lawrence grading system
  • VAS-pain score: 4 and above
  • Neuropathic Pain Diagnostic Questionnaire (DN4) score: 4 and above
  • Body mass index value: 40 and below

Exclusion criteria

Exclusion Criteria:

  • A history of trauma or surgical operation in the knee region
  • Diabetes mellitus
  • Fibromyalgia
  • Inflammatory rheumatic disease
  • Central or peripheral neurological disorder
  • Severe cardiac, pulmonary, or malignant disease
  • Invasive treatment for knee last 3 months
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
66 participants (actual)

Study arms

  • Active comparator
    Duloxetine

    33 patients received 60 mg/day of duloxetine HCL orally for 12 weeks

    Drug: Duloxetine

  • Active comparator
    Pregabalin

    33 patients received 300 mg/day of pregabalin orally for 12 weeks

    Drug: Pregabalin

Interventions

  • DrugDuloxetine
  • DrugPregabalin
06

What researchers measure

Primary outcomes

  1. Assessing Visual Analog Scale Score Change in Patients

    All patients were asked to score the severity of their current knee pain on a 10-cm visual analogue scale (VAS).

    Time frame: 0.,4., and 12. weeks

  2. Neuropthic Pain Diagnostic Questionnaire (DN4)

    There are 10 questions in the DN-4 including 7 questions related to pain quality and 3 questions that investigate the presence of tactile sensation, pinprick sensation, and allodynia. A total score 4/10 indicates neuropathic pain.

    Time frame: 0.,4, and 12. weeks

  3. Assessing Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Score Change in Patients

    The WOMAC consists of 24 questions that assess pain, stiffness, and problems with physical activities. The patient answers all questions on a 5-point Likert-type scale, and the total score ranges from 0 and 96.

    Time frame: 0., 4. and 12. weeks

Secondary outcomes

  1. Assessing Beck Depression Inventory Score Change in Patients

    Symptoms of depression were evaluated by means of the Beck Depression Inventory

    Time frame: 0., 4. and 12. weeks

  2. Assesing Beck Anxiety Inventory Score Change in Patients

    Current anxiete state of patients was assessed by means of the Beck Anxiety Inventory

    Time frame: 0.,4.,and 12. weeks

  3. Assessing Pittsburgh Sleep Quality Index Score Change in Patients

    Sleep quality assessments were performed by means of the Pittsburgh Sleep Quality Index

    Time frame: 0.,4.,and 12. weeks

  4. Assessing Short Form-36 (SF-36) Questionnaire Score Change in Patients

    The SF-36 has eight subscales and consists of a total of 36 questions. The subscales are vitality, physical functioning, bodily pain, general health perceptions, physical role functioning, emotional role functioning, social role functioning, and mental health. A score of 0 is equivalent to maximum disability (poor quality of life), and a score of 100 is equivalent to no disability (good quality of life).

    Time frame: 0.,4.,and 12. weeks

07

Study locations

No study locations are listed for this record.

08

References and documents

Publications

  • Leaney AA, Lyttle JR, Segan J, Urquhart DM, Cicuttini FM, Chou L, Wluka AE. Antidepressants for hip and knee osteoarthritis. Cochrane Database Syst Rev. 2022 Oct 21;10(10):CD012157. doi: 10.1002/14651858.CD012157.pub2. PubMed 36269595 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 25, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04532684
Lead sponsor
Fatih Sultan Mehmet Training and Research Hospital
Responsible party
Sponsor
First posted
Aug 31, 2020
Start date
Oct 2016
Primary completion
Jul 15, 2020
Completion
Dec 15, 2020
Last update
Jan 25, 2021

Study contacts

Özge Gülsüm İlleez, M.D
principal investigator · Fatih Sultan Mehmet Training and Research Hospital

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in May 2020. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion