Objective: The aim of this study was to compare the effectiveness of naproxen (10%) applied by topical iontophoresis or by phonophoresis in the treatment of lateral epicondylitis.
Design: Randomized controlled trial.
Setting: Dokuz Eylül University School of Physical Therapy and Rehabilitation.
Subjects: This study was carried out with 61 patients who had lateral epicondylitis. They were randomized into two groups.
Interventions: Naproxen was applied to the first group using phonophoresis (29 patients – 33 extremities) and to the second group using iontophoresis (32 patients – 34 extremities). Patients in both groups were treated by other physiotherapy methods (cold pack, progressive strengthening and stretching exercises).
Outcomes: Pain scores (at rest, during motion, with pressure, weight lifting), grip strength and Nirschl–Petterone Grading System were evaluated before and after treatment.
Results: Pain scores decreased, grip strength and Nirsch–Petterone Grading System statistically significantly increased in both groups after treatment (p < 0.05), but there were no statistical differences between groups before or after treatment (p > 0.05).
Conclusion: The results suggest that iontophoresis and phonophoresis of naproxen are equally effective electrotherapy methods in the treatment of lateral epicondylitis.
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