• Bina Eftekharsadat, Peyman Roomizadeh, Shervin Torabi, Fariba Heshmati-Afshar, Fatemeh Jahanjoo, and Arash Babaei-Ghazani.
• Department of Physical Medicine and Rehabilitation, Physical Medicine and Rehabilitation Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
• J Hand Ther. 2018 Oct 1; 31 (4): 437-442.

Study DesignRandomized controlled trial.IntroductionCarpal tunnel syndrome (CTS) is the most common entrapment neuropathy of the upper extremity. To date, no previous study has evaluated the efficacy of topical Lavendula stoechas (Lavender) oil in CTS patients.Purpose Of The StudyTo investigate the effectiveness of topical Lavender essential oil in pain intensity, isometric pinch strength, electrophysiological features, and functional status of patients with mild to moderate CTS.MethodsForty eight patients with mild to moderate CTS were enrolled in this randomized placebo-controlled trial. Group A was treated with night wrist orthotic and topical lavender oil ointment. Group B was treated with night wrist orthotic and a placebo ointment. Patients were evaluated at baseline, and after 40 days of intervention with Boston CTS questionnaire (BCTQ), visual analog scale (VAS) for pain, pinch grip strength, power grip, median compound motor action potential latency, and median sensory nerve action potential latency.ResultsAt the end of the study period, both groups improved significantly in terms of BCTQ, VAS, isometric pinch powers, and electrodiagnosis study parameters. However, group A showed significantly greater improvements in BCTQ (mean difference, 0.39 ± 0.31 vs 0.6 ± 0.35; P = .03), VAS (3.37 ± 1.86 vs 1.33 ± 2.07; P = .001), and pinch grip strength (0.73 ± 0.63 vs 0.27 ± 0.54; P = .01) than group B. No significant differences in power grip, median compound motor action potential latency, and median sensory nerve action potential latency were seen between the 2 groups.ConclusionThis study was the first trial of topical lavender oil used in patients with CTS. Wrist orthotic combined with topical lavender oil was more effective than orthotic and placebo in treatment of mild to moderate CTS.Level Of Evidence1b.Copyright © 2017 Hanley & Belfus. Published by Elsevier Inc. All rights reserved.

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