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Open Access Highly Accessed Research article

Effectiveness of moxibustion treatment as adjunctive therapy in osteoarthritis of the knee: a randomized, double-blinded, placebo-controlled clinical trial

Ling Zhao1, Ke Cheng12, Lizhen Wang1, Fan Wu1, Haiping Deng1, Ming Tan34, Lixing Lao145 and Xueyong Shen12*

Author Affiliations

1 Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China

2 Shanghai Research Center of Acupuncture & Meridian, 199 Guoshoujing Road, Shanghai 201203, China

3 Department of Biostatistics, Bioinformatics and Biomathematics, Georgetown University Medical Center, 37th and O Streets, N.W., Washington, DC 20057, USA

4 University of Maryland, School of Medicine, 655 West Baltimore Street, Baltimore, MD 21201, USA

5 School of Chinese Medicine, University of Hong Kong, 10 Sassoon Road, Pokfulam, Hong Kong 999077, China

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Arthritis Research & Therapy 2014, 16:R133  doi:10.1186/ar4590

Published: 24 June 2014

Abstract

Introduction

Our objective was to compare the effectiveness and safety of traditional Chinese moxibustion to that of sham moxibustion in patients with chronic knee osteoarthritis (KOA) pain.

Methods

We conducted a randomized placebo-controlled trial involving 110 patients with KOA who met the inclusion criteria. These patients randomly received either active moxibustion (n = 55) or sham moxibustion control (n = 55) at acupoints Dubi (ST 35), extra-point Neixiyan (EX-LE 4), and an Ashi (tender) point three times a week for 6 weeks. Effects were evaluated with Western Ontario and McMaster Universities’ Osteoarthritis Index (WOMAC VA 3.1) criteria at the end of the course of treatment and 3, 12, and 24 weeks after the initial treatment.

Results

The WOMAC pain scores showed greater improvement in the active treatment group than in control at weeks 3 (P = 0.012), 6 (P <0.001), 12 (P = 0.002), and 24 (P = 0.002) as did WOMAC physical function scores of the active treatment group at week 3 (P = 0.002), 6 (P = 0.015), and 12 (P <0.001) but not 24 (P = 0.058). Patients and practitioners were blinded successfully, and no significant adverse effects were found during the trial.

Conclusions

A 6-week course of moxibustion seems to relieve pain effectively and improve function in patients with KOA for up to 18 weeks after the end of treatment. Moxibustion treatment appears to be safe, and the usefulness of the novel moxa device was validated.

Trial registration

Current controlled trial: ISRCTN68475405. Registered 4 April 2014.