| 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 |
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Received:June 20, 2011
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| 期刊信息：《中国骨伤》2011年24卷，第12期，第1020-1023页 |
| DOI：10.3969/j.issn.1003-0034.2011.12.013 |
| 基金项目:国家自然科学基金项目资助(编号：81001590) |
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目的：探讨骨骼肌受压后肌张力的变化及肌组织内神经末梢形态学改变，观察小针刀针刺的影响。
方法：采用大鼠股薄肌70 kPa 受压2 h模型，60只大鼠分为空白组、压迫组和针刀组。除空白组6 只外，其余54只大鼠左侧设为压迫组，右侧设为针刀组，分别给予单独压迫，压迫后小针刀针刺处理。于处理后第1、2、3天每组随机处死9只。采用电子万能试验机在不同拉伸比率下观察股薄肌张力曲线变化情况，同时，对肌组织病理及神经末梢的形态学改变进行观察。
结果：肌组织的张力在长时间临界压强下逐渐增加，压迫组股薄肌能量消耗比率与针刀组相比，差异有统计学意义(P<0.01);肌组织形态学发生相应病理改变，神经末梢形态学未见明显变化。
结论：小针刀减张法的应用有效降低了肌组织的张力增高，对整个肌组织材料持续集中的力学负荷起到了改善作用。 |
| [关键词]:小针刀 肌张力 神经末梢 肌，骨骼 |
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| Effects of tension relaxation by small needle knife on muscle tension and nerve endings after compression of gracilis muscle in rats |
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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 microstructure. 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. |
| KEYWORDS:Small needle knife Muscle tonus Nerve endings Muscle,skeletal |
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| 引用本文，请按以下格式著录参考文献： |
| 中文格式: | 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 |
| 英文格式: | WANG Yong-zhi,DONG Fu-hui,ZHONG Hong-gang,WANG De-long,WANG Xuan.Effects of tension relaxation by small needle knife on muscle tension and nerve endings after compression of gracilis muscle in rats[J].zhongguo gu shang / China J Orthop Trauma ,2011,24(12):1020~1023 |
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