TITLE

Static magnets for reducing pain: systematic review and meta-analysis of randomized trials

AUTHOR(S)
Pittler, Max H.; Brown, Elizabeth M.; Ernst, Edzard
PUB. DATE
September 2007
SOURCE
CMAJ: Canadian Medical Association Journal;9/25/2007, Vol. 177 Issue 7, p736
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Background: Static magnets are marketed with claims of effectiveness for reducing pain, although evidence of scientific principles or biological mechanisms to support such claims is limited. We performed a systematic review and meta-analysis to assess the clinical evidence from randomized trials of static magnets for treating pain. Methods: Systematic literature searches were conducted from inception to March 2007 for the following data sources: MEDLINE, EMBASE, AMED (Allied and Complementary Medicine Database), CINAHL, Scopus, the Cochrane Library and the UK National Research Register. All randomized clinical trials of static magnets for treating pain from any cause were considered. Trials were included only if they involved a placebo control or a weak magnet as the control, with pain as an outcome measure. The mean change in pain, as measured on a 100-mm visual analogue scale, was defined as the primary outcome and was used to assess the difference between static magnets and placebo. Results: Twenty-nine potentially relevant trials were identified. Nine randomized placebo-controlled trials assessing pain with a visual analogue scale were included in the main meta-analysis; analysis of these trials suggested no significant difference in pain reduction (weighted mean difference [on a 100-mm visual analogue scale] 2.1 mm, 95% confidence interval -1.8 to 5.9 mm, p= 0.29). This result was corroborated by sensitivity analyses excluding trials of acute effects and conditions other than musculoskeletal conditions. Analysis of trials that assessed pain with different scales suggested significant heterogeneity among the trials, which means that pooling these data is unreliable. Interpretation: The evidence does not support the use of static magnets for pain relief, and therefore magnets cannot be recommended as an effective treatment. For osteoarthritis, the evidence is insufficient to exclude a clinically important benefit, which creates an opportunity for further investigation.
ACCESSION #
26594456

 

Related Articles

  • Glucosamine and chondroitin sulphate did not improve pain in osteoarthritis of the knee.  // Evidence Based Medicine;Aug2006, Vol. 11 Issue 4, p115 

    The article presents information on a research to find whether glucosamine and chondroitin sulphate are more effective than placebo for relief of pain in patients with osteoarthritis of the knee or not. The randomised placebo controlled trial design was chosen for the research. The research...

  • What Is Controlled for in Placebo-Controlled Trials? Fillingim, Roger B.; Price, Donald D. // Mayo Clinic Proceedings;Sep2005, Vol. 80 Issue 9, p1119 

    Discusses the importance of placebo effects in pain treatment and research. Approach in evaluating the influence of placebo in treatments; Analysis of factors that contribute to the magnitude of placebo analgesia an experimental paradigm; Neurobiology of placebo analgesia.

  • The Clinical Efficacy of Low-Power Laser Therapy on Pain and Function in Cervical Osteoarthritis. Özdemir, F.; Birtane, M.; Kokino, S. // Clinical Rheumatology;May2001, Vol. 20 Issue 3, p181 

    : Pain is a major symptom in cervical osteoarthritis (COA). Low-power laser (LPL) therapy has been claimed to reduce pain in musculoskeletal pathologies, but there have been concerns about this point. The aim of this study was to evaluate the analgesic efficacy of LPL therapy and related...

  • Osteoarthritis.  // Current Medical Literature: Rheumatology;2007, Vol. 26 Issue 4, p114 

    A review of two articles about osteoarthritis is presented. It includes "Effect of Chondroitin Sulphate in Symptomatic Knee Osteoarthritis: A Multicenter, Randomised, Double-Blind, Placebo-Controlled Study," by B. Mazières and "Meta-Analysis: Acupuncture for Osteoarthritis of the Knee," by E....

  • Acupuncture treatment for pain: systematic review of randomised clinical trials with acupuncture, placebo acupuncture, and no acupuncture groups. Madsen, Matias Vested; Gøtzsche, Peter C.; Hróbjartsson, Asbjørn // BMJ: British Medical Journal (Overseas & Retired Doctors Edition;2/7/2009, p330 

    Objectives To study the analgesic effect of acupuncture and placebo acupuncture and to explore whether the type of the placebo acupuncture is associated with the estimated effect of acupuncture. Design Systematic review and meta-analysis of three armed randomised clinical trials. Data sources...

  • Predicting response to physiotherapy treatment for musculoskeletal shoulder pain: a systematic review. Chester, Rachel; Shepstone, Lee; Daniell, Helena; Sweeting, David; Lewis, Jeremy; Jerosch-Herold, Christina // BMC Musculoskeletal Disorders;2013, Vol. 14 Issue 1, p1 

    Background: People suffering from musculoskeletal shoulder pain are frequently referred to physiotherapy. Physiotherapy generally involves a multimodal approach to management that may include; exercise, manual therapy and techniques to reduce pain. At present it is not possible to predict which...

  • Association between genetic variants of DVWA and osteoarthritis of the knee and hip: a comprehensive meta-analysis. Rui Zhang; Jianfeng Yao; Peng Xu; Baohu Ji; Voegeli, Géraldine; Weikun Hou; Hui Li; Yi Wang; Kelsoe, John R.; Jie Ma // International Journal of Clinical & Experimental Medicine;2015, Vol. 8 Issue 6, p9430 

    Recently, double von Willebrand factor domain A (DVWA) gene, a previously unknown gene, was revealed to contain several single nucleotide polymorphisms (SNPs) that showed consistent association with knee osteoarthritis (OA) in Japanese and Chinese cohorts. However, subsequent studies failed to...

  • A Review of Recent Clinical Experience with Almotriptan. Diener, Hans-Christoph // Drugs;2006 Supplement, Vol. 66, p17 

    The purpose of this paper is to review six recently completed trials (three double-blind, three open-label) providing valuable data on efficacy and tolerability of almotriptan in 'real world' settings. In a randomized double-blind trial, almotriptan 12.5 mg and zolmitriptan 2.5 mg achieved...

  • Glucosamine and chondroitin sulfate did not improve pain in osteoarthritis of the knee.  // ACP Journal Club;Jul/Aug2006, Vol. 145 Issue 1, p17 

    The article presents information on a study which determines how glucosamine, chondroitin sulfate are more effective than placebo for relief of pain in osteoarthritis. The study findings suggest that in patients with osteoarthritis of the knee, are chondroitin sulfate, glucosamine, or both more...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics