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Pulsed electromagnetic energy treatment offers no clinical benefit in reducing the pain of knee osteoarthritis: a systematic review\ud

By Christopher James McCarthy, Michael James Callaghan and Jacqueline Anne Oldham


Background\ud The rehabilitation of knee osteoarthritis often includes electrotherapeutic modalities as well as advice and exercise. One commonly used modality is pulsed electromagnetic field therapy (PEMF). PEMF uses electro magnetically generated fields to promote tissue repair and healing rates. Its equivocal benefit over placebo treatment has been previously suggested however recently a number of randomised controlled trials have been published that have allowed a systematic review to be conducted.\ud \ud Methods\ud A systematic review of the literature from 1966 to 2005 was undertaken. Relevant computerised bibliographic databases were searched and papers reviewed independently by two reviewers for quality using validated criteria for assessment. The key outcomes of pain and functional disability were analysed with weighted and standardised mean differences being calculated.\ud \ud Results\ud Five randomised controlled trials comparing PEMF with placebo were identified. The weighted mean differences of the five papers for improvement in pain and function, were small and their 95% confidence intervals included the null.\ud \ud Conclusion\ud This systematic review provides further evidence that PEMF has little value in the management of knee osteoarthritis. There appears to be clear evidence for the recommendation that PEMF does not significantly reduce the pain of knee osteoarthritis.\u

Topics: R1
Publisher: BioMed Central Ltd.
Year: 2006
OAI identifier:

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  1. (1996). A: A placebo controlled double blind trial to evaluate the effectiveness of pulsed short wave therapy for osteoarthritic hip and knee pain. Pain doi
  2. (2003). Burden of major musculoskeletal conditions. Bulletin of the World Health Organisation
  3. (2002). de Bie RA: Electromagnetic fields for the treatment of osteoarthritis.
  4. (2005). Dissing S: Treatment of knee osteoarthritis with pulsed electromagnetic fields: a randomized, double-blind, placebo-controlled study. Osteoarthritis Cartilage doi
  5. (2001). DL: Magnetic pulse treatment for knee osteoarthritis: a randomised, double-blind, placebo-controlled study. Curr Med Res Opin doi
  6. (2005). Evidence-based recommendations for the role of exercise in the management of osteoarthritis of the hip or knee--the MOVE consensus. Rheumatology doi
  7. (1993). Gandek B: SF-36 health survey manual and interpretation guide
  8. (1992). How serious is knee osteoarthritis? Ann Rheum Disease
  9. (2004). JA: Supplementing a home exercise programme with a classbased exercise programme is more effective than home exercise alone in the treatment of knee osteoarthritis. Rheumatology doi
  10. (2005). L: An evaluation of pulsed shortwave on knee osteoarthritis using radioleucoscintigraphy: a randomised, double blind, controlled trial. Joint Bone Spine doi
  11. (1988). LW: Validation study of WOMAC: a health status instrument for measuring clinically important patient relevant outcomes to antirheumatic drug therapy in patients with osteoarthritis of the hip or knee.
  12. (1980). Measuring health in arthritis: the Arthritis Impact Measurement Scales. Arthritis and Rheumatism doi
  13. (2005). Nahir AM: Effect of pulsed shortwave diathermy on pain and function of subjects with osteoarthritis of the knee: a placebo-controlled double-blind clinical trial. Clin Rehabil doi
  14. (1999). Nguyen JP: Review of the literature on shortwave diathermy as applied to osteo-arthritis of the knee. Physiotherapy doi
  15. (1998). of York: EuroQol EQ-5D: User guide Version B edition. doi
  16. (2002). Pulsed electromagnetic fields for treating osteoarthritis. Physiotherapy doi
  17. (1993). RH: A double blind trial of the clinical effects of pulsed electromagnetic fields in osteoarthritis. doi
  18. (1994). The effect of pulsed electromagnetic fields in the treatment of osteoarthritis of the knee and cervical spine. Report of randomized, double blind, placebo controlled trials.
  19. (1995). The treatment of osteoarthritis of the knee with pulsed electrical stimulation.

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