Efficacy and Safety of Diclofenac Sodium Topical Gel 1% Compared to Placebo in Subjects With Acute Blunt Trauma Injuries

Study Overview
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Brief Summary
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This study will assess the analgesic efficacy of DSG 1% compared to placebo in the reduction of the pain associated with acute blunt trauma injuries.

Official Title
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A Randomized, Double-blind, Placebo-controlled, Parallel Group Study to Evaluate the Efficacy and Safety of Diclofenac Sodium Topical Gel (DSG) 1% Applied Four Times Daily in Subjects With Acute Blunt Soft Tissue Injuries/Contusions of the Limbs

Conditions
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Acute Blunt Soft Tissue Injuries/Contusions

Intervention / Treatment
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* Drug: placebo
* Drug: Placebos


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Male or female subjects aged 16 years and over Fresh impact injury of the upper or lower limbs, not requiring admittance to hospital & meeting baseline pain intensity level Anticipated time between injury and treatment must be ≤ 6 hours Exclusion Criteria: Pain medication prior to randomization Topical analgesic or anti-inflammatory treatment over the previous month in the area to be treated Any physical impairment that would influence efficacy assessments, such as peripheral or central neurological disease, significant back pain, painful conditions of the upper or lower extremities Other protocol-defined inclusion/exclusion criteria may apply

Ages Eligible for Study
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Minimum Age: 16 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: diclofenac sodium gel 1%<br>diclofenac sodium gel 1% | Drug: placebo<br> <br> |
| Placebo Comparator: Placebo<br>Placebo | Drug: Placebos<br> <br> |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Sum of Pain Intensity Differences Over 24 Hours After Initiating Treatment (SPID 24) | The primary efficacy outcome was the time-weighted SPID 24 (POW). Sum of pain intensity differences over 24 hours after initiating treatment (SPID 24) for the ITT population. SPID 24 derived from spontaneous Pain Intensity scores assessed over 24 hours on a 0 (No pain) - 10 (Pain as bad as you can imagine) Numerical Rating Scale. SPID 24 was computed using the trapezoidal rule, i.e. Σ [T(i) - T(i-1)] x [((PID)(i-1) + PID(i))/2] in an obvious notation, where T(i) is nominal time and PID(i), the pain intensity difference at Time i, is the baseline pain intensity (PI) score - PI score at Time i. Scores were assessed hourly for the first 4 hours and then every 2 hours whilst subjects were awake. Linear interpolation was used to compute an exact SPID as of 24 hours. SPID-24 was computed after all imputation of missing assessments and post-rescue assessments had been completed. | 24 hours |