Preventive effect of bionics-pulsed electromagnetic field on biomechanical property of bone / 第三军医大学学报

ABSTRACT

Objective To study the protective effect of bionics-pulsed electromagnetic field (BEMF) on the biomechanical property of the bones of Wistar rats. Methods Thirty-two 3-month-old female Wistar rats were divided into 4 groups (n=8 in each group). The 8 rats of group A (the control) were treated normally and received injections of saline in the same amount of drugs for the rats of other 3 groups. The rats of group B received injections of desamethasone (1 mg/kg, 2 intramuscular injections/week). The rats of groups C and D received injections of desamethasone in the same procedure as that of group B. In addition, the rats of group C received daily subcutaneous injections of calcitonin in the dosage of 2 IU/kg and those of group D were irradiated with BEMF once daily. The results of the 3 kinds of therapeutic procedures were observed 8 weeks later. Results After the irradiation of BEMF, the biomechanical parameters of the lumbar vertebrae and the femur were far higher in the rats of group D than in those of group B. Conclusion BEMF irradiation is effective to prevent the decrease of biomechanical properties of the bones of the rats.