中国组织工程研究

中国组织工程研究 ›› 2011, Vol. 15 ›› Issue (43): 7991-7993.doi: 10.3969/j.issn.1673-8225.2011.43.003

• 数字化骨科 digital orthopedics • 上一篇    下一篇

数字散斑法测量加载100 N与400 N肱骨干骨折钢板固定下的位移

赵云伟1，周轶平2，陈英杰3，李仲铭3，叶  宏4，孔维云5   

  1. 1云南财经大学校医院，云南省昆明市  650221；昆明医学院，2药学院暨重点实验室，3人体解剖学教研室，4统战部，云南省昆明市 650031；5云南省第二人民医院骨科，云南省昆明市  650021
  • 收稿日期:2011-04-24 修回日期:2011-09-01 出版日期:2011-10-22 发布日期:2011-10-22
  • 通讯作者: 叶宏，助教，昆明医学院统战部，云南省昆明市 650031 191229169@qq.com 并列通讯作者：孔维云，在读博士，主治医生，云南省第二人民医院骨科，云南省昆明市 650021 kongweiyunkm128@126.com
  • 作者简介:赵云伟，男，1971年生，汉族，云南省玉溪地区通海县人，1998年昆明医学院毕业，主治医师，主要从事全科医学和管理工作。 353589354@qq.com 并列第一作者：周轶平☆，女，1975年生，云南省昆明市人，汉族，2009年法国第十一大学毕业，博士，副教授，主要从事临床医学与生物学研究。 1401545363@qq.com 并列第一作者：陈英杰★，男，1967年生，云南省个旧市人，汉族，1997年北京医科大学毕业，硕士，教授，主要从事临床医学与生物学研究。 chenyj2002@foxmail.com 并列第一作者：李仲铭★，男，1974年生，云南省个旧市人，汉族，2005年中国协和医科大学毕业，硕士，讲师，主要从事临床医学与生物学研究。 297192563@qq.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)；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)。

Measuring the displacement of the steel plate for humeral fractures under 100 N and 400 N by the digital speckle method

Zhao Yun-wei1, Zhou Yi-ping2, Chen Ying-jie3, Li Zhong-ming3, Ye Hong4, Kong Wei-yun5   

  1. 1Department of Clinic, Yunnan University of Finance and Economics, Kunming  650221, Yunnan Province, China; 2Yunnan Key Laboratory of Pharmacology for Natural Products, 3Department of Anatomy, 4United Front Work Department, Kunming Medical University, Kunming  650031, Yunnan Province, China; 5Department of Orthopedics, Second People’s Hospital of Yunnan Province, Kunming  650021, Yunnan Province, China
  • Received:2011-04-24 Revised:2011-09-01 Online:2011-10-22 Published:2011-10-22
  • Contact: Ye Hong, Assistant, United Front Work Department, Kunming Medical University, Kunming 650031, Yunnan Province, China 191229169@qq.com Correspondence to: 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
  • About author:Zhao Yun-wei, Attending physician, Department of Clinic, Yunnan University of Finance and Economics, Kunming 650221, Yunnan Province, China 353589354@qq.com Zhou Yi-ping☆, Doctor, Associate professor, Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming 650031, Yunnan Province, China 1401545363@qq.com Chen Ying-jie★, Master, Professor, Department of Anatomy, Kunming Medical University, Kunming 650031, Yunnan Province, China chenyj2002@foxmail.com Li Zhong-ming★, Master, Lecturer, Department of Anatomy, Kunming Medical University, Kunming 650031, Yunnan Province, China 297192563@qq.com Zhao Yun-wei, Zhou Yi-ping, Chen Ying-jie and Li Zhong-ming contributed equally to this study.
  • Supported by:

    Specific Foundation Program of Yunnan Universities Key Laboratory for Pharmacy, No. 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*

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321

被引次数

2

摘要：

背景：将光学测量技术数字散斑相关方法应用到生物医学领域中，能更精确地分析螺钉断裂的特点。
目的：以数字散斑法测量肱骨钢板螺钉的位移。
方法：取4根肱骨制造肱骨中段骨折模型。将骨折标本进行复位，用8孔钢板固定，骨折线两端各使用4枚螺钉固定。分别在100及400 N拉力下，将模型设计成骨折前后的5种状态，即状态a是未骨折加压钢板坚强内固定组(模拟骨折愈合，未锯断)；状态b是骨折后近端去1枚螺钉；状态c是在状态b的基础上远端去1枚螺钉；状态d是在状态c的基础上近端去1枚螺钉；状态e是在状态d的基础上远端去1枚螺钉。分别测量骨折线两端两枚螺钉的位移，通过相关软件计算位移。
结果与结论：在100 N及400 N拉力下，骨折线旁对称分布的两枚螺钉随着其他螺钉的减少，所产生的位移差异存在显著性意义(P < 0.01)；骨折线旁成对称分布的两枚螺钉所承受的应力差异无显著性意义(P > 0.05)。提示骨折线两端的2枚螺钉是承受较多应力的部位(应力集中)，易于发生断裂，应选用比现有螺钉的直径增大1.0~2.5 mm的螺钉，增加骨折线旁的固定螺钉稳定性以避免断钉等后遗症。

关键词: 数字散斑方法, 肱骨干, 骨折, 钢板, 生物力学

Abstract:

BACKGROUND: The digital speckle method used in biomedicine is more accurate to analyze the characteristics of screw breakage.
OBJECTIVE: To measure the displacement of the humeral steel screw by the digital speckle method.
METHEDS: A total of 4 root humeri were used, and humeral middle segment fracture was made by sawing at 1/2 of the humerus. The fracture sample was reduced, and fixed using 8-well plate with 4 screws at each end. Five conditions (before and after the fracture) were designed to compare the displacement of the screws. The displacement was calculated under 100 and 400 N tensile force. Condition A was a strengthened plate fixation (no sawed, no fracture); Condition B was to remove a screw at the proximal end after fracture; Condition C was to remove a screw at the distal based on B; Condition D is to remove a screw at the proximal based on C; Condition E was to remove a screw at the distal based on D. Two MEDAL screws displacement at both ends were calculated by using relevant softwares.
RESULTS AND CONCLUSION: Under 100 N and 400 N tension, there were significant different displacement of the two screws symmetrically distributed at both fracture lines as other screws decreased (P < 0.01). Stress difference of the two screws symmetrically distributed beside fracture line ends had no remarkable significance by further binary comparison (P > 0.05). The two screws which were just located near the two fringes of the fracture line undertaken more stress and collapsed easily. It would be better to choose the screw with the screw pore of diameter 100-2.5 mm longer than the present one, in order to increase its stability to avoid the breakage.

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