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The Effectiveness of the functional magnetic stimulation Therapy in Treating Sciatica Syndrome

Open Journal of Therapy and Rehabilitation 2015年第3期3卷 63-69页

作者： Tamara Radakovic Nikola Radakovic Faculty of Medicine Novi SadSerbia Center of Integrative Medicine“CIM” Novi SadSerbia

Introduction: Degenerative or traumatic causes are most common in generating sciatica syndrome, which is normally treated with well-known physical therapy methods. A relatively new way of treating sciatica problems is so-called functional magnetic stimulation (FMS), whose principle is based on electromagnetic field inducing electrical field inside the body. Electrical field triggers action potential of nerve cells and that way stimulates peripheral motor nerve system. Aim: Aim of this study is to measure and estimate the effectiveness of implementing therapy with functional magnetic stimulation in regular physical treatment of sciatica syndrome. Materials and Methods: 28 male patients aged between 30 and 55 with back problem were recruited on an outpatient basis. FMS therapy was performed with TESLA Stym? device (Iskra Medical d.o.o., Slovenia) treating lumbosacral region equally on both sides of the spine. Physical examination was performed to evaluate tree parameters: the mobility of the lumbar spine in flexion and extension, together with the straight leg raise test (Lasegue sign). We estimated patients’ progress, comparing angle values of mobility from the first examination day with other examination days. Results: In FMS treated group of patients, lumbosacral flexion, extension and Lasegue test angle were significantly higher compared to day 0 on the first physical examination day (day 3) (p functional magnetic therapy could be suggested as a regular physical therapy method in treating this kind of pain syndromes.

关键词： Sciatica Syndrome Lasegue Sign functional magnetic stimulation FMS

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Analytical solutions of transient pulsed eddy current problem due to elliptical electromagnetic concentrative coils

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Chinese Physics B 2010年第12期19卷 30-42页

作者：肖春燕张军 Department of Electrical Engineering School of Automation and Electrical EngineeringBeihang University

The electromagnetic concentrative coils are indispensable in the functional magnetic stimulation and have potential applications in nondestructive testing. In this paper, we propose a figure-8-shaped coil being composed of two arbitrary oblique elliptical coils, which can change the electromagnetic concentrative region and the magnitude of eddy current density by changing the elliptical shape and/or spread angle between two elliptical coils. Pulsed current is usually the excitation source in the functional magnetic stimulation, so in this paper we derive the analytical solutions of transient pulsed eddy current field in the time domain due to the elliptical concentrative coil placed in an arbitrary position over a half-infinite plane conductor by making use of the scale-transformation, the Laplace transform and the Fourier transform are used in our derivation. Calculation results of field distributions produced by the figure-8-shaped elliptical coil show some behaviours as follows： 1） the eddy currents are focused on the conductor under the geometric symmetric centre of figure-8-shaped coil; 2） the greater the scale factor of ellipse is, the higher the eddy current density is and the wider the concentrative area of eddy current along y axis is; 3） the maximum magnitude of eddy current density increases with the increase of spread angle. When spread angle is 180°, there are two additional reverse concentrative areas on both sides of x axis.

关键词： transient pulsed eddy current analytical solution elliptical electromagnetic concentra-tive coil functional magnetic stimulation

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