| 长骨内开口效应对其力学性能影响的理论模型研究 |
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| 引用本文： | 赵文志 刘迎曦 张军 李守巨 李靖年 孙晓江. 长骨内开口效应对其力学性能影响的理论模型研究[J]. 生物医学工程学杂志, 2005, 22(5): 1052-1054 |
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| 作者姓名： | 赵文志 刘迎曦 张军 李守巨 李靖年 孙晓江 |
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| 作者单位： | 大连理工大学工程力学系工业装备结构分析国家重点实验室，大连理工大学工程力学系工业装备结构分析国家重点实验室，大连理工大学工程力学系工业装备结构分析国家重点实验室，大连理工大学工程力学系工业装备结构分析国家重点实验室，大连医科大学第二临床学院骨科，大连医科大学第二临床学院骨科 大连116024大连医科大学第二临床学院骨科，大连116023，大连116024，大连116024，大连116024，大连116023，大连116023 |
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| 摘 要： | 建立一个股骨中段的外侧皮质带有矩形开口的力学模型,采用有限元方法,计算骨开口区的尺寸改变时,股骨的扭转刚度和应力分布的变化。结果表明:骨开口长度为骨外径的1倍时(1OD),对股骨扭转刚度和剪应力分布的影响较小;开口长度从2OD增至4OD时扭转刚度急剧减小,而且剪应力的最大值位于开口区中心。本结论对临床骨科的手术治疗方法和骨开口尺寸的控制提供了重要的理论依据。
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| 关 键 词： | 开口效应 力学模型 扭转刚度 有限元方法 |
| 收稿时间： | 2003-01-29 |
| 修稿时间： | 2003-01-292003-11-13 |
A Theoretical Model Study of Open Section Effect on the Mechanical Properties of Long Bone |
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| Zhao Wenzh, Liu Yingxi,Zhang Jun, Li Shouju,Li Jingnian, Sun Xiaojiang. A Theoretical Model Study of Open Section Effect on the Mechanical Properties of Long Bone[J]. Journal of biomedical engineering, 2005, 22(5): 1052-1054 |
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| Authors: | Zhao Wenzh Liu Yingxi Zhang Jun Li Shouju Li Jingnian Sun Xiaojiang |
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| Affiliation: | 1.State Key Laboratory of Structural Analysis for Industrial Equipment, Dept. of Engineering Mechanics, Dahan University of Technology, Dalian 116024, China;2.Dept. of 0rthopaedics, The Second Affiliated Hospital of Dalian Medical University, Dalian 116023,China |
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| Abstract: | The mechanical model of femur mid-diaphysis with a rectangular open section in the exterior cortex was developed and a finite element method was adopted in calculating and analysing the changes of torsional stiffness and the stress distribution when the dimension of the open section altered. It showed that the open section with a length of 1 OD(femur mid-diaphysis diameter) had little influence on the femur torsional stiffness or stress distribution. The torsional stiffness decreased most dramatically as the length increased from 2 to 4 OD. Shear stress peaked at the center of the open section. This conclusion provides an important theoretical ground for the operative methods and the dimension control of an open section in clinical orthopaedics. |
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| Keywords: | Open section effect Mechanical model Torsional stiffness Finite element method |
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