Randomised controlled trial of magnetic bracelets for relieving pain in osteoarthritis of the hip and knee

被引:55
作者
Harlow, T
Greaves, C
White, A
Brown, L
Hart, A
Ernst, E
机构
[1] Univ Cent Lancashire, Lancashire Sch Hlth & Postgrad Med, Preston PR1 2HE, Lancs, England
[2] Coll Surg, Cullompton EX15 1TG, Devon, England
[3] Peninsula Med Sch, Plymouth PL6 8BX, Devon, England
[4] Peninsula Med Sch Complementary Med, Exeter EX2 4NT, Devon, England
来源
BMJ-BRITISH MEDICAL JOURNAL | 2004年 / 329卷 / 7480期
关键词
D O I
10.1136/bmj.329.7480.1450
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Objective To determine the effectiveness of commercially available magnetic bracelets for pain control in osteoarthritis of the hip and knee. Design Randomised, placebo controlled trial with three parallel groups. Setting Five rural general practices. Participants 194 men and women aged 45-80 years with osteoarthritis of the hip or knee. Intervention Wearing a standard strength static bipolar magnetic bracelet, a weak magnetic bracelet, or a non-magnetic (dummy) bracelet for 12 weeks. Main outcome measures Change in the Western Ontario and McMaster Universities osteoarthritis lower limb pain scale (WOMAC A) after 12 weeks, with the primary comparison between the standard and dummy groups. Secondary outcomes included changes in WOMAC B and C scales and a visual analogue scale for pain. Results Mean pain scores were reduced more in the standard magnet group than in the dummy group (mean difference 1.3 points, 95% confidence interval 0.05 to 2.55). Self reported blinding status did not affect the results. The scores for secondary outcome measures were consistent with the WOMAC A scores. Conclusion Pain from osteoarthritis of the hip and knee decreases when wearing magnetic bracelets. It is uncertain whether this response is due to specific or non-specific (placebo) effects.
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收藏
页码:1450 / 1454
页数:5
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