中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (52): 9035-9040.doi: 10.3969/j.issn.2095-4344.2013.52.016

• 骨与关节生物力学 bone and joint biomechanics • 上一篇    下一篇

数字散斑法测量加载100 N与500 N肱骨干骨折钢板固定下的位移

杨利萍1,田  明2,周轶平3,叶  宏4,李必俊5,陈英杰6   

  1. 1昆明市法医院司法鉴定中心,云南省昆明市  650214;2昆明医科大学生物学教研室,云南省昆明市  650500;3昆明医科大学药学院暨天然药物重点实验室,云南省昆明市  650500;4昆明医科大学统战部,云南省昆明市  650500;5湖北医药学院人体组织胚胎学教研室,湖北省十堰市  442000;6昆明医科大学解剖学教研室,云南省昆明市  650500
  • 修回日期:2013-09-18 出版日期:2013-12-24 发布日期:2013-12-24
  • 通讯作者: 李必俊,讲师,湖北医药学院人体组织胚胎学教研室,湖北省十堰市 442000 516209179@qq.com 陈英杰,教授,昆明医科大学解剖学教研室,云南省昆明市 650500 1984818576@qq.com
  • 作者简介:杨利萍,女,1969年生,云南省大理市人,白族,1992年昆明医科大学毕业,主检法医师,主要从事医学生物学研究。 kmfyy@126.com 并列第一作者: 田明★,男,1976年生,湖北省荆门市人,汉族,2003年中科院昆明动物研究所毕业,硕士,副教授,主要从事医学生物学研究。 761470408@qq.com 并列第一作者:周轶平☆,女,1975年生,云南省昆明市人,汉族,2007年巴黎第十一大学毕业,博士,副教授,主要从事医学生物学研究。 1073452689@qq.com 并列第一作者: 叶宏★,男,1981年生,云南省宣威市人,汉族,2011年昆明医科大学毕业,硕士,助教,主要从事医学生物学研究。 191221969@qq.com
  • 基金资助:

    云南省科技厅-昆明医科大学联合专项基金资助项目(2007C0043R,2011FZ098X)**;云南省教育厅科学研究基金立项资助项目(07Z10199,2010Y191,03Y508C,13000035,2010ZL004)*****;国家自然科学基金(31101616,31160425)**

Displacement of steel plate for humeral fractures under the load of 100 N and 500 N measured using digital speckle method

Yang Li-ping1, Tian Ming2, Zhou Yi-ping3, Ye Hong4, Li Bi-jun5, Chen Ying-jie6   

  1. 1Kunming Judicial Expertise Center of Forensic Medicine Hospital, Kunming  650214, Yunnan Province, China; 2Department of Biology, Kunming Medical University, Kunming  650500, Yunnan Province, China; 3Yunnan Key Laboratory of Pharmacology for Natural Products and College of Pharmacy, Kunming Medical University, Kunming  650500, Yunnan Province, China; 4Department of United Front Work, Kunming Medical University, Kunming  650500, Yunnan Province, China; 5Department of Human Histology and Embryology, Hubei Medical University, Shiyan  442000, Hubei Province, China; 6Department of Anatomy, Kunming Medical University, Kunming  650500, Yunnan Province, China
  • Revised:2013-09-18 Online:2013-12-24 Published:2013-12-24
  • Contact: Li Bi-jun, Lecturer, Department of Human Histology and Embryology, Hubei Medical University, Shiyan 442000, Hubei Province, China 516209179@qq.com Chen Ying-jie, Professor, Department of Anatomy, Kunming Medical University, Kunming 650500, Yunnan Province, China 1984818576@qq.com
  • About author:Yang Li-ping, Coroner-in-charge, Kunming Judicial Expertise Center of Forensic Medicine Hospital, Kunming 650214, Yunnan Province, China kmfyy@126.com Tian Ming, Master, Associate professor, Department of Biology, Kunming Medical University, Kunming 650500, Yunnan Province, China 761470408@qq.com Zhou Yi-ping, Doctor, Associate professor, Yunnan Key Laboratory of Pharmacology for Natural Products and College of Pharmacy, Kunming Medical University, Kunming 650500, Yunnan Province, China 1073452689@qq.com Ye Hong, Master, Assistant, Department of United Front Work, Kunming Medical University, Kunming 650500, Yunnan Province, China 191221969@qq.com Yang Li-ping, Tian Ming, Zhou Yi-ping, and Ye Hong contributed equally to this paper.
  • Supported by:

    the Union Specific Foundation of Yunnan Province Technology Department and Kunming Medical University, No. 2007C0043R, 2011FZ098X**; the Scientific Research Project of Yunnan Province Education Department, No. 07Z10199, 2010Y191, 03Y508C, 13000035, 2010ZL004*****; the National Natural Science Foundation of China, No. 31101616, 31160425**

摘要:

背景:目前国际上还没有统一骨组织力学性能测试的试验标准。以往将传统传感器引入骨折位移的研究,存在精度低、高消耗成本等问题。
目的:采用数字散斑法测量肱骨骨折内固定后钢板螺钉的位移特点。
方法:取8根肱骨,于其中点横断,制造肱骨中段骨折模型。将标本用8孔钢板固定,骨折线两端各使用4枚螺钉。将实验模型设计成5种状态进行对比分析:状态a是骨折后加压钢板坚强内固定组(未锯断,模拟骨折愈合),状态b是在状态a锯断后基础上近端去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。螺钉编号顺序从上到下依次为1-8号,即骨折线上位螺钉为1-4号,骨折线下位螺钉为5-8号。用电子万能试验机进行加载100 N与500 N测量,通过相关软件计算位移。
结果与结论:在不同载荷间的总位移比较,差异有显著性意义(F=49.155,P < 0.001),即随着加载力的增大,5种模拟状态下第4钉、第5钉的总位移值均呈逐渐增大趋势。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,应选用比现有螺钉直径增大1-2.5 mm的螺钉,增加骨折线旁固定螺钉的稳定性以避免断钉等后遗症。


中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程


全文链接:

关键词: 骨关节植入物, 骨关节与生物力学, 肱骨干, 骨折, 钢板, 内固定, 生物力学, 数字散斑法, 国家自然科学基金

Abstract:

BACKGROUND: There is no unified measure of bone tissue mechanical property test at present. The study concerning traditional sensor for fracture displacement had some problems such as low precision, and high consumption cost.
OBJECTIVE: To measure the displacement of plate and screw after internal fixation for fracture of humerus using digital speckle method.
METHODS: A total of eight humeral specimens were taken. The steel plate fixation model in the humerus 1/2 was made. The specimens were fixed using eight-hole steel plate, and four screws were fixed on each end of fracture line. Five conditions of experimental model were designed for comparative analysis. Condition a: compression plate fixation group (not saw off, to simulate fracture healing). Condition b: on the basis of sawing off in condition a, one screw was removed on the proximal end. Condition c: on the basis of condition b, one screw was removed on the distal end. Condition d: on the basis of condition c, one screw was removed on the distal end. Condition e: on the basis of d, one screw was removed on the distal end. The screws were numbered No. 1-8 from top to bottom. That is, the screws on upper fracture line were numbered No. 1-4, and those on the lower fracture line were numbered No. 5-8. The specimens were installed on electronic universal testing machine, and loaded 100 N and 500 N. The displacement was calculated using the related software.
RESULTS AND CONCLUSION: Significant differences in total displacement were detected under different loads (F=49.155, P < 0.001). With increased load, the total displacement of the fourth and fifth screws gradually increased under five kinds of conditions. These indicated that the two screws on the two ends of the fracture line endured more stresses (stress concentration), and easily broke. It would be better to choose the screw with the screw diameter of 1-2.5 mm bigger than the present one in order to increase its stability to avoid the breakage of screws.


中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程


全文链接:

Key words: fractures , humerus , internal fixators , biomechanics , fractures , stress

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