Effect of polarity exchangeable permanent magnet on frozen shoulder pain

AbstractIn order to examine the effectiveness of a north-south polarity exchangeable permanent magnet (PEPM) similar to non-polarity exchangeable permanent magnet (N-PEPM), we performed a pathophysiological study on frozen shoulder pain by assessment of subjective (Visual Analogue Scale) and objective symptoms (thermography, blood flow and deep body thermometer). Sixty-four patients (32 males and 32 females, average age 43.1, 22–69 years old) were studied. PEPM therapeutic device and N-PEPM therapeutic device were randomly assigned to the patients under a double blind test. PEPM (5 mm × 12 mm, 120 mT, rotation/2 seconds, PIP Fujimoto Co., Ltd., Osaka) was applied externally at the site of pain. N-PEPM (5 mm × 12 mm, 120 mT non-rotation) was also applied as control. All patients received the treatment for 2 days. Significance was determined with ANOVA. In the subjective and objective symptoms, both PEPM and N-PEPM were effective, respectively. The improvement in PEPM patients was significantly greater than...