We walked for almost 18 months
attempting to recover strength. Paul
had the easy job initially, taking pictures and learning how to assist.
Unlike the PEMFs device, the CMF device delivers a time varying magnetic field by superimposing the time-varying magnetic field onto an additional static magnetic field. The device is usually worn for 30 minutes daily. The rationale for the combined field with 30 minute per day treatment was based on animal data, which demonstrated increased bone stiffness at the 30-minute dose. However, the treatment effect was far greater in this animal model with 24-hour per day treatment, indicating a dose response. In addition, a comparison of pulsed electromagnetic field (PEMF) with combined magnetic fields (CMF) in a rabbit tibial osteotomy model showed the two signals to be very similar at equal treatment times.16
The latest clinical study examining the use of adjunctive combined magnetic fields to enhance non-instrumented posterolateral spinal fusion was reported at the American Association of Orthopedic Surgeons 2000 meeting.17 The series revealed an overall success rate of 64% in the stimulated group compared to 43% in the control group. In this clinical trial, combined magnetic fields appeared to only be effective in women, with no improvement in fusion rates among men. There are no other published scientific studies documenting the clinical efficacy of combined magnetic fields.