| 膨胀锁定髓内钉治疗股骨骨折的生物力学评价 |
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| 引用本文： | 穆尚强,张磊,刘建敏,黄哲元,卫磊,袁志. 膨胀锁定髓内钉治疗股骨骨折的生物力学评价[J]. 医学争鸣, 2009, 0(18) |
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| 作者姓名： | 穆尚强 张磊 刘建敏 黄哲元 卫磊 袁志 |
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| 作者单位： | 第四军医大学西京医院骨科研究所;解放军118医院骨科; |
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| 基金项目： | 陕西省攻关课题面上项目(2005K11-G4) |
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| 摘 要： | 目的:对一种新型无需传统锁钉的膨胀锁定髓内钉进行生物力学性能测试和评价.方法:将6对新鲜股骨标本均分为2组,造成股骨中段横行骨折,分别用膨胀锁定髓内钉和国产传统交锁髓内钉内固定,并使断端间保留1.5 cm的裂隙.分别对其进行轴向压缩载荷、水平扭转及三点弯曲等生物力学测试,用SPSS13.0统计软件进行统计分析.结果:膨胀锁定髓内钉的抗短缩刚度、抗旋转刚度及抗弯曲刚度略小于交锁髓内钉,但无显著性差异.结论:膨胀锁定髓内钉具有较强抗压、抗弯、抗旋转性能,符合生物学固定的要求,有较好的临床推广应用前景.
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| 关 键 词： | 股骨骨折 骨折固定术 髓内钉 生物力学 |
A biomechanical evaluation of intramedullary expansive locking nail in treatment of femoral fractures |
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| MU Shang-Qiang,ZHANG Lei,LIU Jian-Min,HUANG Zhe-Yan,WEI Lei,YUAN ZhiInstitute of Orthopedics,Xijing Hospital,Fourth Military Medical University,Xi'an ,China. A biomechanical evaluation of intramedullary expansive locking nail in treatment of femoral fractures[J]. Negative, 2009, 0(18) |
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| Authors: | MU Shang-Qiang ZHANG Lei LIU Jian-Min HUANG Zhe-Yan WEI Lei YUAN ZhiInstitute of Orthopedics Xijing Hospital Fourth Military Medical University Xi'an China |
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| Affiliation: | MU Shang-Qiang1,ZHANG Lei2,LIU Jian-Min1,HUANG Zhe-Yan1,WEI Lei1,YUAN Zhi11Institute of Orthopedics,Xijing Hospital,Fourth Military Medical University,Xi'an 710033,China,2Department of Orthopedics,PLA 118 Hospital,Wenzhou 325000 |
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| Abstract: | AIM: To test and evaluate the biomechanical functions of intramedullary expansive locking nail(IELN),a new kind of internal fixation without the orthodox lockpin.METHODS: Six pairs of fresh adult cadaveric femur specimens were divided into 2 groups: IELM group and interlocking nail group.A fracture was made at 1/2 shaft in each femur and then a 1.5 cm bone gap was kept respectively by IELN or homemade interlocking nail.A biomechanical test was conducted in each specimen on axial displacement,rotation resist... |
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| Keywords: | femoral fractures fracture fixation intramedullary nail biomechanics |
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