中国骨伤2011，Vol.24Issue(12)：1020-1023,4.DOI:10.3969/j.issn.1003-0034.2011.12.013
小针刀减张法对大鼠股薄肌受压迫后肌张力和神经末梢影响的研究
Effects of tension relaxation by small needle knife on muscle tension and nerve endings after compression of gracilis muscle in rats
摘要
Abstract
Objective:To determine the effect of tension relaxation by small needle knife on the muscle tension and morphology changes of nerve terminals when sustained pressure was applied to muscular tissue. Methods:Rat gracilis muscles were exposed to pressure in vivo at 70 kPa for 2 hours. Sixty rats were divided into three groups:normal,control and experiment group respectively. In all rats except the six normal ones,the lower legs were considered as the control group,and the right left as experiment group. At day 1,2 and 3,9 rats from the two groups were randomly selected and sacrificed in order to determine the muscle tension change. At the same time .muscle histology and morphology changes of nerve terminals were observed. Results; Abnormal tension increased in muscles under compression of 70 kPa. At the 1st and 2nd days,there were no significant differences between the two groups. Compared with control group, the tension was lower in experiment group, and there was statistically significant difference (P<0.01) between the two groups. Exposure of striated muscle tissue to intensive and prolonged compression may pathologically alter its microstmcture. Histological evaluation showed that this stiffening accompanied extensive necrotic damage. The changes could not be found in the nerve terminals. Conclusion:Deep muscle tissue that undergoes prolonged compression may significantly increase its stiffness during acute injury. Tension relaxation applied by small needle knife can effectively reduce the mechanical load which is harmful to the whole tissue.关键词
小针刀/肌张力/神经末梢/肌,骨骼Key words
Small needle knife/ Muscle tonus/ Nerve endings/ Muscle,skeletal引用本文复制引用
王永志,董福慧,钟红刚,王德龙,王萱..小针刀减张法对大鼠股薄肌受压迫后肌张力和神经末梢影响的研究[J].中国骨伤,2011,24(12):1020-1023,4.基金项目
国家自然科学基金项目资助(编号:81001590)Fund programs:Supported by National Natural Science Foundation of China(No.81001590) （编号:81001590）
