| 家兔胫骨的三点弯测试 |
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Received:September 15, 2007
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| 期刊信息：《中国骨伤》2008年21卷，第2期，第103-105页 |
| DOI：doi:10.3969/j.issn.1003-0034.yyyy.nn.zzz |
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目的：探讨采用工程材料力学中抗弯梁的力学模型，通过兔胫骨三点弯测试， 获得整骨材料力学测试方法实用的力学参数。
方法：采用10只正常成年大耳白兔下肢骨标本，共10对胫骨，行三点弯力学测试。作为骨的三维实体模型建立后，虚拟加载的一种实验对比模式。支承跨距为80 mm.
结果：得到10对正常大耳白兔胫骨抗弯力学参数。胫骨最大载荷所对应的加载点挠度平均值右侧(2.737±0.262) mm,左侧(2.739±0.233) mm;胫骨的最大载荷(代表抗弯强度)的平均值右侧(17.803±2.675) kg,左侧(18.366±2.653) kg;胫骨最大载荷前载荷-挠度曲线下面积平均值右侧(23.829±4.413) kg·mm,左侧(24.725±4.101) kg·mm;胫骨载荷~挠度曲线线性部分斜率(代表抗弯刚性)平均值右侧(7.545±1.310) kg/mm,左侧(7.631±1.174) kg/mm.
结论：正常家兔胫骨个体间差异较大，建议三点弯测试实验中采用双侧配对比较。 |
| [关键词]:胫骨 三点弯测试 兔 生物力学 |
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| Revealing mechanical property of intract rabbit tibia in three-point bending test |
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Abstract:
Objective: To explore the mechanical property of intact long bone through three-point bending test of rabbit tibia according to mechanics of materials.
Methods: Ten pairs of normal rabbits tibia were treated on three-point bending test with 80 mm supporting distance in order to corroborate the virtual loading test on bone model.
Results: Bending stiffness and strength of 10 pairs of normal rabbit tibia were obtained. The maximum flexibility of the right and the left tibia was(2.737±0.262) mm and(2.739±0.233) mm respectively. The maximum load,which indicated the bending strength,of the right and the left tibia was(17.803±2.675) kg and (18.366±2.653) kg respectively. The area under the load-flexibility curve before fail of the right and the left tibia was(23.829±4.413) kg/mm and(24.725±4.101) kg·mm respectively. The slope of the load-flexibility curve which indicate the stiffness of the right and the left tibia was(7.545±1.310) kg/mm and(7.631±1.174) kg·mm respectively.
Conclusion: The discrepancy between different animal body is larger than conventionally required. It's suggested for performing three-point bending test of long bone of the body both sides in pair. |
| KEYWORDS:Tibia Three-point bending test Rabbits 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: | 钟红刚,刘卫华,卜海滨,钱民全.家兔胫骨的三点弯测试[J].中国骨伤,2008,21(2):103~105 |
| 英文格式: | ZHONG Hong-gang,LIU Wei-hua,BU Hai-bin,QIAN Min-quan.Revealing mechanical property of intract rabbit tibia in three-point bending test[J].zhongguo gu shang / China J Orthop Trauma ,2008,21(2):103~105 |
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