中国组织工程研究

中国组织工程研究 ›› 2011, Vol. 15 ›› Issue (30): 5552-5555.doi: 10.3969/j.issn.1673-8225.2011.30.011

• 骨科植入物 orthopedic implant • 上一篇    下一篇

数字散斑法加载200~400 N测量股骨干骨折髓内钉置入内固定下的形变

吴邦国1，阎  甲2，李仲铭2，周轶平3，孔维云4，陈英杰2   

  1. 1昭通市第一人民医院核医学科，云南省昭通市   657000
    2昆明医学院人体解剖学教研室，云南省昆明市   650031
    3昆明医学院药学院暨重点实验室，云南省昆明市    650031
    4云南省第二人民医院骨科，云南省昆明市     650021
  • 收稿日期:2011-03-15 修回日期:2011-06-15 出版日期:2011-07-23 发布日期:2011-07-23
  • 通讯作者: 孔维云，在读博士，主治医师，云南省第二人民医院骨科，云南省昆明市650021 kongweiyunkm128@126.com 并列通讯作者：陈英杰，硕士，教授，昆明医学院人体解剖学教研室，云南省昆明市 650031 chenyingjiekm@126.com
  • 作者简介:吴邦国，男，1973年生，云南省永善县人，汉族，1998年昆明医学院毕业，主治医师，主要从事全科医学研究与管理工作。 54812038@qq.com 并列第一作者：周轶平☆，女，1975年生，云南省昆明市人，汉族，博士，副教授，主要从事临床医学与生物学研究。 yipingzhou.cn@gmail.com 并列第一作者：阎甲，男，1984年生，河北省邢台市人，汉族，昆明医学院在读硕士，主要从事临床应用解剖研究工作。 jiayan.med@gmail.com
  • 基金资助:

    云南省科技厅-昆明医学院联合专项基金资助项目(2007C0044R，2009CD188)，课题名称：光学测量在骨折内固定优化方案的研究；云南省高校药学重点实验室创新平台建设专项基金(6010902009-2010ZL004)；云南省教育厅科学研究基金立项资助项目(2010Y191，07Z10199)，课题名称：光学测量在骨折内固定优化方案的研究”。

Measuring the deformation of the intramedullary nail for the femoral fractures under 200-400 N by the digital speckle method

Wu Bang-guo1, Yan Jia2, Li Zhong-ming2, Zhou Yi-ping3, Kong Wei-yun4, Chen Ying-jie2   

  1. 1Department of Nuclear Medicine, Zhaotong First People’s Hospital, Zhaotong  657000, Yunnan Province, China
    2Department of Anatomy, Kunming Medical University, Kunming  650031, Yunnan Province, China
    3Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming  650031, Yunnan Province, China
    4Department of Orthopedics, Second People’s Hospital of Yunnan Province, Kunming  650021, Yunnan Province, China
  • Received:2011-03-15 Revised:2011-06-15 Online:2011-07-23 Published:2011-07-23
  • Contact: Kong Wei-yun, Studying for doctorate, Attending physician, Department of Orthopedics, Second People’s Hospital of Yunnan Province, Kunming 650021, Yunnan Province, China kongweiyunkm128@126.com Correspondence to: Chen Ying-jie, Master, Professor, Department of Anatomy, Kunming Medical University, Kunming 650031, Yunnan Province, China chenyingjiekm@126.com
  • About author:Wu Bang-guo, Attending physician, Department of Nuclear Medicine, Zhaotong First People’s Hospital, Zhaotong 657000, Yunnan Province, China 54812038@qq.com Zhou Yi-ping, Doctor, Associate professor, Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming 650031, Yunnan Province, China yipingzhou.cn@gmail.com Yan Jia, Studying for master’s degree, Department of Anatomy, Kunming Medical University, Kunming 650031, Yunnan Province, China jiayan.med@gmail.com Wu Bang-guo, Zhou Yi-ping and Yan Jia contributed equally to this paper.
  • Supported by:

    Specific Foundation Program of Yunnan Universities Key Laboratory for Pharmacy (6010902009-2010ZL004)*; Specific Association Foundation Program of Yunnan Provincial Science and Technology Department and Kunming Medical University, No. 2007C0044R*, 2009CD188*; Scientific Research Foundation Program of Education Department of Yunnan Province, No. 2010Y191*, 07Z10199*

PDF

398

被引次数

9

摘要：

背景：髓内钉置入内固定治疗长骨骨折易发生螺钉断裂致骨畸形。将光学测量技术应用到生物医学领域中，能更精确的分析螺钉断裂的特点。
目的：以数字散斑法测量股骨髓内钉交锁螺钉的形变。
方法：取4根成人无名尸体防腐股骨标本，制作股骨中1/2交锁髓内钉内固定模型。4枚锁钉从上到下标记为1，2，3，4。每具标本按A~D组顺序进行测试，A组：安装交锁髓内钉模拟骨折愈合；B组：在A组基础上股骨中段横形锯断2次，即中点锯断1次，中点下5 cm处行第2次锯断，模拟较复杂型骨折；C组：在B组的基础上上端去除1枚锁钉；D组：在C组基础上下端去除1枚锁钉。在200，300，400 N拉力下，以数字散斑相关软件测量各组第4锁钉的形变。
结果与结论：在300 N拉力下，B组与C组锁钉形变差异有显著性意义(P < 0.05)。提示在载荷递增到300 N的过程中，在股骨干骨折愈合过程中远端靠近骨折线之锁钉将产生较大的应变，此钉极易发生疲劳性断裂。

关键词: 数字散斑法, 股骨干, 骨折, 髓内钉, 交锁钉, 螺钉, 内固定, 生物力学

Abstract:

BACKGROUND: Intramedullary nail fixation for long bone fractures is easy to cause bone deformities due to screw breakage. The optical measurement technology used in the biomedical field can be more accurate to analyze the characteristics of screw breakage
OBJECTIVE: To measure the deformation of femoral interlocking intramedullary nail with the digital speckle correlation method.
METHEDS: Four femoral specimens of unknown grown-ups were taken. An intramedullary nail fixation model in the femur 1/2 was made. Four locking nails marked were from top to bottom 1, 2, 3, 4. Groups A, B, C and D were measured in order. Group A: the femur was not sawed with intramedullary nail placed inside the femur shaft marrow (simulation of the cured fracture); group B: the femur was sawed on the basis of A in order to simulating more complicated fracture (fractured twice on the femur 1/2, the center point of femoral shaft was sawed up firstly, the place 5 mm below the center point was sawed up secondly); group C: a nail of the upper end was removed on the basis of B; D: a nail of the lower end was removed on the basis of C; the deformation of the fourth nail in groups A-D was measured. Under 200, 300, 400 N, the related data were carried out to be measured by CSS-44100-electronic universal testing machine, and the deformation was calculated by digital speckle correlation method.
RESULTS AND CONCLUSION: There was a statistical difference between group B and C with 300 N (P < 0.05). The remote nail for femoral interlocking intramedullary nail internal fixation is easily broken.

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