The primary purpose of this study is to assess the effectiveness of once daily application of a diclofenac sodium topical patch in reducing acute pain due to mild to moderate ankle sprains when applied to the painful area.
This randomized, double-blind, placebo-controlled, parallel group study will be conducted in patients with mild or moderate ankle sprains. Eligible patients will be randomized (in a 1:1 ratio) to receive double-blind treatment with either the diclofenac topical patch or a matching placebo patch to be applied once daily for 7 days. Patients will return to the clinic for assessments on Day 3 and Day 7; a follow-up assessment will be conducted on Day 14. Patients will complete an electronic diary in which assessments including pain intensity, pain relief and functional disability will be recorded twice daily. Ratings of the quality of sleep will be recorded in the diary each morning, and the use of study treatment and rescue medication will be recorded in the diary each day.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
219
Topical diclofenac patch applied once daily to area of pain
Matching placebo patch, containing identical constituents to the active comparator except for diclofenac sodium; applied once daily
PPD
Austin, Texas, United States
Change in average pain during daily activity at Day 3
Time frame: Day 3
Change in average pain during daily activity at Day 7
Time frame: Day 7
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