Topical Ketoprofen Patch (100 mg) for the Treatment of Ankle Sprain

Abstract

Background: Topical nonsteroidal anti-inflammatory drugs offer the advantage of enhanced drug delivery to local affected tissues with low plasma levels and an expected reduced incidence of systemic adverse events (mainly peptic ulcer disease and gastrointestinal hemorrhage).

Hypothesis: To test the efficacy and tolerability of a 100-mg patch of ketoprofen applied once a day.

Study Design: Randomized controlled clinical trial; Level of evidence, 1.

Methods: The 2-week trial included patients suffering painful (spontaneous pain ≥50 mm on a 0- to 100-mm visual analog scale), benign (grade I or II), recent (<2 days) ankle sprains as a model of general traumatic soft tissue injuries. The primary efficacy criterion was spontaneous pain change after 7 days of treatment in the intention-to-treat population. One hundred sixty-three patients were randomized (ketoprofen, 81; placebo, 82).

Results: After 1 week of treatment, the decrease in spontaneous pain was -50 ± 20 mm for ketoprofen and -38 ± 24 mm for the placebo, showing a statistically significant intergroup difference (P = .0007). The majority of the secondary criteria were also statistically significant in favor of the ketoprofen patch. Tolerance was good in both groups, adverse events being mostly local.

Conclusion: This trial suggested that a 7-day course of treatment with a ketoprofen patch is useful in benign ankle sprain, without revealing unexpected adverse events.

Keywords

ankle sprain ketoprofen patch soft tissue injuries randomized controlled trial

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