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Treatment of Knee Pain With Topical Diclofenac Cream 8% or Diclofenac Gel 1%

NCT02068859 · Status: UNKNOWN · Phase: PHASE3 · Type: INTERVENTIONAL · Enrollment: 106

Last updated 2014-02-21

No results posted yet for this study

Summary

Non-steroidal anti-inflammatory medication (NSAID) therapy is a mainstay treatment for joint pain and painful musculoskeletal disorders. Though this form of systemic therapy is highly effective, it causes substantial side effects including gastritis and gastric ulcer disease, renal impairment, hypertension, and thrombotic events. These types of oral medications are utilized by millions of Americans on a fairly regular basis in both over-the-counter preparations and prescription compounds. In recent years, topical preparations of NSAIDs have been used for localized pain as an alternate to oral administration with reported good analgesic efficacy. For example, they are often used for knee pain. There is little systemic absorption of NSAIDs with topical administration, and consequently less likelihood of systemic side effects.

Though much less studied than oral NSAIDs, topical NSAID preparations are currently prescribed for a variety of arthritic and musculoskeletal types of pain. The best-studied commercially available products are diclofenac 1% compounds. Higher concentrations presumably provide higher tissue concentration leading to better and longer pain relief, along with a more prominent anti-inflammatory effect.

The investigators will therefore compare the efficacy of available topical diclofenac 1% gel to that of diclofenac 8% cream. Specifically, the investigators propose to test the hypothesis that efficacy of topical diclofenac 8% exceeds that of diclofenac 1%, without any increase in systemic toxicity.

One hundred six patients presenting to the Cleveland Clinic Pain Management Department for the treatment of knee pain will be randomly assigned to topical diclofenac cream 8% or diclofenac gel 1%, with the designated medication applied the symptomatic area of the knee over 6 weeks. Investigators will be blinded to treatment, and will evaluate pain relief and functional/disability status.

Conditions

  • Knee Pain Chronic
  • Knee Injuries

Interventions

DRUG

Diclofenac Cream 8%

Subjects will be given instructions to apply the study drug topically 3-4 times daily to the affected knee. Application instructions will also be printed on the tubes of products.

DRUG

Diclofenac Gel 1%

Subjects will be given instructions to apply the study drug topically 3-4 times daily to the affected knee. Application instructions will also be printed on the tubes of products.

Sponsors & Collaborators

  • FPR Specialty Pharmacy

    lead INDUSTRY

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2014-01-31
Primary Completion
2015-01-31
Completion
2015-01-31

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02068859 on ClinicalTrials.gov