| 用光弹方法观察纵向牵拉力对颈椎关节应力的影响 |
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投稿时间：1999-04-01 修订日期：1999-10-24
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| 期刊信息：《中国骨伤》2000年，第13卷，第6期，第327-328页 |
| DOI：doi:10.3969/j.issn.1003-0034.yyyy.nn.zzz |
| 基金项目:浙江省中医管理局重点项目(项目编号96-30) |
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中文摘要:
目的：观察着力点和角度不同的纵向牵拉力作用下颈椎关节的应力变化。
方法：采用光弹材料聚碳酸脂和硅橡胶按1∶1比例制成颈椎模型,通过计算模型上形成的等差线干涉条纹级数,分别观察C4～7颈椎关节后缘在各种拉力作用下的应力变化。
结果：颈椎模型受力后,在光屏上可以清晰地显示等差线干涉图谱,计算结果显示,位于C1或C2的牵拉力所产生的应力普遍较高;就力的方向而言,C4,5关节以15°的牵拉力所产生的应力最高,C5,6和C6,7关节以25°的牵拉力所产生的应力最高。
结论：颈椎关节后缘所受拉应力大小与牵拉力的着力点和方向之间存在密切关系,临床施行颈椎拔伸手法时,根据病变关节的不同,应选择合适的着力点和牵拉方向。 |
| 【关键词】光弹法 颈椎 生物力学 |
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| The effect of vertical cervical traction force upon the stress around the vertebral joints,an experimental observation using light elastic method |
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ABSTRACT
Objective:To observe the variations of stress magnitude in the cervcical vertebra exerted by vertical traction force from various angles and different points.
Methods: The cervical vertebra model was produced using elastic material of light(polycarbonate) and silica rubber(1∶1).By calculating the arithmetical progression of interference fringe,the author judged the stress magnitude in the posterior edge of the C 4～7 vertebral bodies when different kinds of pulling force acted on.
Results:The interference pattern was seen clearly on the screen while the force acted on the model.When the pulling force acted on C1 or C2,the greater magnitude of the stress presented in the joints.When the force was acting at an angle of 15° the maximum stress presented in C4,5 and when the force acted at an angle of 25° the maximum stress presented inC5,6andC6,7.
Conclusion: The stress distributed upon the posterior edge of the vertebral joints is closely related to the points that the force acted on and the direction of the force.Appropriate points and direction of the pull should be selected according to the change of the lesional joints when manual manipulation is used for the treatment of cervical vertebral disease. |
| KEY WORDS Light elastic method Cervical vertebrae Biomechanics |
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| 引用本文，请按以下格式著录参考文献： |
| 中文格式: | 詹红生,应航,陈文辉,赵家壁,吕荣坤.用光弹方法观察纵向牵拉力对颈椎关节应力的影响[J].中国骨伤,2000,13(6):327~328 |
| 英文格式: | ZHAN Hong sheng,YING Hang,CHEN Wen hui.The effect of vertical cervical traction force upon the stress around the vertebral joints,an experimental observation using light elastic method[J].zhongguo gu shang / China J Orthop Trauma ,2000,13(6):327~328 |
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