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一、引言近来,很多人对利用电及电磁刺激器辅助骨愈合很感兴趣。目前采用的技术分三种类型。首先,在骨折部位埋植丝状电极,并使低电平直流电通过这些电极。动物实验表明,它可以刺激骨的生长,通常是在阴极的周围,并且已在美国的一些医疗中心的2,000多病人身上作了临床使用,许多学者引证的成功率在80％以上。因这种技术是创伤性的,所以常常将这种电刺激的方法与其它方法交替使用。它是根据利用随时间而变化的磁场在骨折部位的附近产生电场的原理。主要采用两种类型的线圈,一种是空心的,另一种是铁心的。铁心的方法是将病人骨折部位置于上面绕有线圈的叠片C型铁心的磁极片之间。空心的方
I. INTRODUCTION Recently, many people are very interested in using electric and electromagnetic stimulators to assist bone healing. The technology currently used is divided into three types. First, filament-shaped electrodes are embedded in the fracture site and low-level direct current is passed through these electrodes. Animal experiments show that it can stimulate bone growth, usually around the cathode, and have been used clinically in more than 2,000 patients in several medical centers in the United States, with many authors citing a success rate of more than 80%. Because of the traumatic nature of this technique, this method of electrical stimulation is often used interchangeably with other methods. It is based on the use of magnetic field changes over time in the vicinity of the fracture site to generate electric field principle. The main use of two types of coils, one is hollow, and the other is the core. The core method is to place the patient’s fracture site between the pole pieces of the laminated C-core with the coil wound thereon. Hollow side