| 胸腰椎骨折三点加压固定中哈灵顿棒危险断面及其载荷影响的研究 |
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| 引用本文： | 罗卓荆,沈根标,阮狄克,崔海相,张西正,邹长春. 胸腰椎骨折三点加压固定中哈灵顿棒危险断面及其载荷影响的研究[J]. 中国脊柱脊髓杂志, 1993, 0(1) |
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| 作者姓名： | 罗卓荆 沈根标 阮狄克 崔海相 张西正 邹长春 |
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| 作者单位： | 第四军医大学唐都医院骨科 710038陕西省西安市(罗卓荆，沈根标，阮狄克，崔海相)，西安矿业学院材料力学教研室 710056陕西省西安市(张西正)，西安矿业学院材料力学教研室 710056陕西省西安市(邹长春) |
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| 摘 要： | 本文采用二维光弹模型研究哈灵顿分离棒（ＨＤＲ）的应力分布。实验载荷包括作用于两端钩部的垂直力及作用于棒中点的水平力。实验发现棒棘齿区应力高于光滑区，ＨＤＲ光滑区—棘齿区交界处应力居棒同侧最高，是棒强度的危险断面，其应力值与载荷呈正直线相关．本文亦初步讨论了减少危险断面应力、避免ＨＤＲ疲劳断裂的途径。
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| 关 键 词： | 哈灵顿棒 危险断面 生物力学 光弹性实验 胸腰椎骨折 |
Studies of stress riser of Harrington rod in the treatment of thoracolumbar spinal fractures |
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| Luo Zhou-jing Shen Gen-biao Ruan Di-ke,et al. Studies of stress riser of Harrington rod in the treatment of thoracolumbar spinal fractures[J]. Chinese Journal of Spine and Spinal Cord, 1993, 0(1) |
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| Authors: | Luo Zhou-jing Shen Gen-biao Ruan Di-ke et al |
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| Abstract: | The stress distribition of Harrington distraction rod (HDR) was studied by 2-D photoelastics. The loads included horizontal forces on the middle of the rod and vertical forces on the two ending hooks. The experimental results showed that the stresses on ratchet part were higher than on the smooth part, the stresses on ratchet-shaft junction were the highest to be stress riser and were risen linely with the increasing loads. The method of reducing stresses on junction to avoid fatigue failure of HDR was also discussed. |
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| Keywords: | Harrington rod Stress riser Biomechanics Photoelastics Thoracolumbar fracture |
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