Microwave diathermy demonstrated to improve symptomatic knee OA compared to sham treatment .
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Localized hyperthermia induced by microwave diathermy in osteoarthritis of the knee: a randomized placebo-controlled double-blind clinical trial
Knee Surg Sports Traumatol Arthrosc. 2011 Jun;19(6):980-7. doi: 10.1007/s00167-010-1350-7. Epub 2010 Dec 1563 patients were randomized to determine the effectiveness of hyperthermia induced by microwave diathermy in treating sufferers of knee osteoarthritis. Patients were allocated to receive 30-minute sessions of either microwave diathermy at a frequency of 433.92 MHz or sham treatment three times per week for four weeks. Follow-up evaluation was conducted at the end of the therapy phase (4 weeks), and also at 16 weeks for outcomes of pain, stiffness, and function. The results indicated that patient-reported WOMAC and performance-based Timed-Up and Go test outcomes were significantly improved in those who received heat therapy compared to sham treatment patients.
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