| 人体胸腰椎体冲击损伤的生物力学研究 |
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Received:September 20, 2010
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| 作者 | Author | 单位 | Unit | E-Mail |
| 毕大卫 |
BI Da-wei |
杭州师范大学医学院附属萧山人民医院, 浙江 杭州 311200 |
The Affiliated Xiaoshan People's Hospital of Medical College of Hangzhou Normal University, Hangzhou 311200, Zhejiang, China |
david1125hz@yahoo.com.cn |
| 王伟 |
WANG Wei |
浙江萧山医院 |
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| 费骏 |
FEI Jun |
杭州市红十字会医院 |
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| 祖罡 |
ZU Gang |
杭州师范大学医学院附属萧山人民医院, 浙江 杭州 311200 |
The Affiliated Xiaoshan People's Hospital of Medical College of Hangzhou Normal University, Hangzhou 311200, Zhejiang, China |
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| 陈亿民 |
CHENG Yi-min |
杭州师范大学医学院附属萧山人民医院, 浙江 杭州 311200 |
The Affiliated Xiaoshan People's Hospital of Medical College of Hangzhou Normal University, Hangzhou 311200, Zhejiang, China |
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| 魏威 |
WU Wei |
杭州市红十字会医院 |
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| 期刊信息：《中国骨伤》2010年23卷，第10期，第772-775页 |
| DOI：10.3969/j.issn.1003-0034.2010.10.017 |
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目的：探讨人体脊柱胸腰椎在冲击载荷作用下引起的爆裂骨折的生物力学机制及损伤特点。
方法：自2008年9月至2009年10月，采集10具新鲜人体脊柱胸腰椎标本，平均分为两组，建立实验模型，分别进行静力学强度试验和动态冲击生物力学实验，观察在不同载荷作用下，胸腰椎体发生静态和动态冲击响应的相关数据。
结果：胸腰椎屈服载荷为(5 280.00±354.20)N,屈服位移为(13.32±2.07) mm,极限载荷为(6 590.00±249.20) N,极限位移为(20.60±2.57) mm,加载速度为0.02 g,胸腰椎的动态力学性质其平均极限载荷为(14 425.60±1101.52) N,载荷平均作用时间为(17.29±2.04) ms,平均加速度为(36.80±2.81) g,动态位移为(45.11±1.13 )mm.
结论：胸腰椎爆裂性骨折是由高能量瞬间释放所导致的严重损伤，生物力学受力作用呈脉冲式变化，胸腰椎体具有生物材料的粘弹性性质。 |
| [关键词]:胸腰椎骨折 冲击损伤 生物力学 |
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| Biomechanics research of thoracolumbar vertebral burst fracture in impact damage |
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Abstract:
Objective: To investigate the damage charactristics and biomechanical mechanisms of the thoracolumbar vertebral bursh fracture during the impact loading.
Methods: From September 2008 to October 2009,10 fresh human thoracolumbar spine specimens were collected for experimental model and divided into two groups. Biomechanical static and dynamic impact strength test were performed respectively in two groups. The static and dynamic data from thoracolumbar vertebrae shock response in different loads were observated.
Results: Thoracolumbar yield load was(5 280.00±354.2) N,yield displacement was (13.32±2.07) mm,the limit load was(6 590.00±249.20) N,ultimate displacement was(20.60±2.57) mm,load speed was 0.02 g,and the average limit load of dynamic mechanical properties of thoracic and lumbar vertebrae was(14 425.60±1101.52) N,the average reaction time load was(17.29±2.04) ms,the average of acceleration was(36.80±2.81) g,the dynamic displacement was(45.11±1.13) mm.
Conclusion: Thoracolumbar vertebral burst fracture is a serious injury caused by the release of high-energy moment,the role of biomechanical forces are in a pattern of pulse change,thoracic and lumbar vertebrae present with the viscoelastic properties of biological materials. |
| KEYWORDS:thoracolumbar vertebrae fracture Impact damage 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: | 毕大卫,王伟,费骏,祖罡,陈亿民,魏威.人体胸腰椎体冲击损伤的生物力学研究[J].中国骨伤,2010,23(10):772~775 |
| 英文格式: | BI Da-wei,WANG Wei,FEI Jun,ZU Gang,CHENG Yi-min,WU Wei.Biomechanics research of thoracolumbar vertebral burst fracture in impact damage[J].zhongguo gu shang / China J Orthop Trauma ,2010,23(10):772~775 |
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