• M S Corbett, S J C Rice, V Madurasinghe, R Slack, D A Fayter, M Harden, A J Sutton, H Macpherson, and N F Woolacott.
• University of York, UK. mark.corbett@york.ac.uk
• Osteoarthr. Cartil. 2013 Sep 1; 21 (9): 1290-8.

ObjectiveTo compare the effectiveness of acupuncture with other relevant physical treatments for alleviating pain due to knee osteoarthritis.DesignSystematic review with network meta-analysis, to allow comparison of treatments within a coherent framework. Comprehensive searches were undertaken up to January 2013 to identify randomised controlled trials in patients with osteoarthritis of the knee, which reported pain.ResultsOf 156 eligible studies, 114 trials (covering 22 treatments and 9,709 patients) provided data suitable for analysis. Most trials studied short-term effects and many were classed as being of poor quality with high risk of bias, commonly associated with lack of blinding (which was sometimes impossible to achieve). End of treatment results showed that eight interventions: interferential therapy, acupuncture, TENS, pulsed electrical stimulation, balneotherapy, aerobic exercise, sham acupuncture, and muscle-strengthening exercise produced a statistically significant reduction in pain when compared with standard care. In a sensitivity analysis of satisfactory and good quality studies, most studies were of acupuncture (11 trials) or muscle-strengthening exercise (9 trials); both interventions were statistically significantly better than standard care, with acupuncture being statistically significantly better than muscle-strengthening exercise (standardised mean difference: 0.49, 95% credible interval 0.00-0.98).ConclusionsAs a summary of the current available research, the network meta-analysis results indicate that acupuncture can be considered as one of the more effective physical treatments for alleviating osteoarthritis knee pain in the short-term. However, much of the evidence in this area of research is of poor quality, meaning there is uncertainty about the efficacy of many physical treatments.Copyright © 2013 Osteoarthritis Research Society International. Published by Elsevier Ltd. All rights reserved.

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