만성 통증 환자에서 Pulsed Electromagnetic Fields (PEMF) Therapy의 유용성
The Effectiveness of Pulsed Electromagnetic Fields Therapy for Treatment of Chronic Pain
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Abstract
Background: Pulsed electromagnetic fields (PEMF) have been widely used to treat nonhealing fractures and related problems in bone healing since their approval by the Food and Drug Administration (FDA) in 1979. Some studies have suggested that electromagnetic fields might be useful in the treatment of chronic illnesses, such as lumbar radiculopathy, whiplash syndrome, posterior neck pain, persistent rotator cuff tendonitis, knee osteoarthritis and post-herpetic neuralgia, etc. Herein, the effectiveness of PEMF therapy for the treatment of chronic pain was assessed. Methods: 40 patients, with chronic back pain, neck pain, post-herpetic neuralgia, complex regional pain syndrome, atypical facial pain, shoulder pain and myofascial pain syndrome were studied. Pulsed electromagnetic fields of 30 and 50 Hz were applied for 20 minutes, 5 times a week. The outcomes were measured using the visual analogue (VAS, 0-10) and patient satisfaction scales (good, fair, poor). Data were analyzed using repeated ANOVA measurements for a changes in the VAS (initial VAS final VAS) and by the paired t-test for changes from the baseline VAS to follow-up VAS values. Results: Compared to the mean baseline VAS value before the PEMF therapy (4.8 ± 1.6), that after (2.7 ± 1.5) showed a significant change (P < 0.01). The patient satisfaction scales of good and fair were 65.0 and 35.0%, respectively. There were no significant side-effects. Conclusions: The decrease in the VAS score suggests that PEMF therapy has potential as an effective method of improving the symptoms of chronic pain.
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