| InterTan治疗股骨转子间骨折有限元分析 |
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Received:August 20, 2018
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| 作者 | Author | 单位 | Unit | E-Mail |
| 郝连升 |
HAO Lian-sheng |
聊城市中医医院, 山东 聊城 252000 |
Liaocheng Chinese Medicine Hospital, Liaocheng 252000, Shandong, China |
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| 关涛 |
GUAN Tao |
聊城市中医医院, 山东 聊城 252000 |
Liaocheng Chinese Medicine Hospital, Liaocheng 252000, Shandong, China |
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| 黄峰 |
HUANG Feng |
聊城市中医医院, 山东 聊城 252000 |
Liaocheng Chinese Medicine Hospital, Liaocheng 252000, Shandong, China |
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| 陈健 |
CHEN Jian |
聊城市中医医院, 山东 聊城 252000 |
Liaocheng Chinese Medicine Hospital, Liaocheng 252000, Shandong, China |
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| 穆胜凯 |
MU Sheng-kai |
聊城市中医医院, 山东 聊城 252000 |
Liaocheng Chinese Medicine Hospital, Liaocheng 252000, Shandong, China |
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| 朱贵伟 |
ZHU Gui-wei |
聊城市中医医院, 山东 聊城 252000 |
Liaocheng Chinese Medicine Hospital, Liaocheng 252000, Shandong, China |
hls19860722@163.com |
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| 期刊信息：《中国骨伤》2019年32卷，第2期，第176-180页 |
| DOI：10.3969/j.issn.1003-0034.2019.02.017 |
| 基金项目:山东省中医药科技发展计划项目（编号：2015-481） |
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目的：利用有限元方法研究使用InterTan治疗Evans-Jensen Ⅳ型股骨转子间骨折的生物力学特点。
方法：利用螺旋CT对志愿者的股骨及内植物进行断层扫描获取DICOM格式数据，将数据经Mimics软件重建左侧股骨、InterTan三维模型，在此基础上建立Evans-Jensen Ⅳ型股骨转子间骨折内固定三维有限元模型，研究不同模型的Von Mses应力及微应变分布，分析Evans-Jensen Ⅳ型股骨转子间骨折内固定后生物力学稳定性。
结果：InterTan模型股骨的应力模式与正常股骨相同，主要位于股骨近端内侧与股骨中下1/3外侧，但InterTan模型股骨应力较正常股骨相同部位应力有不同程度降低，模型中股骨应力峰值为13.92 MPa，位于内植物末端与股骨接触处；模型中内植物应力峰值位于拉力钉与主钉内下接触处，为146.5 MPa。
结论：对于骨质疏松性Evans-Jensen Ⅳ型股骨转子间骨折患者，InterTan固定具有明显的生物力学优势，且不易导致股骨中段应力性骨折；尤其对于活动度较大的Evans-Jensen Ⅳ型股骨转子间骨折患者，InterTan固定具有更好的稳定性，为手术内固定物的选择提供理论依据。 |
| [关键词]:股骨转子间骨折 骨折固定术,内 有限元分析 |
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| Finite element analysis of InterTan for the treatment of femoral intertrochanteric fractures |
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Abstract:
Objective: To study the biomechanical characteristics of InterTan for the treatment of femoral intertrochanteric fracture of Evans-Jensen Ⅳ.
Methods: Scanning the femur and internal plant of volunteers with spiral CT to obtain DICOM format data. Three-dimensional models of left femur and InterTan were reconstructed by Mimics software. On this basis, a three-dimensional finite element model of internal fixation for Evans-Jensen Ⅳ intertrochanteric fracture of femur was established. The stress and microstrain distribution of Von Mses in different models were studied. The biomechanical stability after internal fixation of the Evans Jensen Ⅳ femoral intertrochanteric fracture was analyzed.
Results: The stress pattern of the femur of InterTan model was the same as that of the normal femur, which was mainly located on the medial side of the proximal femur and the lower third of the femur. However, the stress of femur in InterTan model was lower than that in the same part of normal femur. The peak stress of the femur in the model was 13.92 MPa, located at the end of the inner plant in contact with the femur. The stress peak of the plant in the model was 146.5 MPa at the lower contact point between the tension nail and the main nail.
Conclusion: InterTan fixation has obvious biomechanical advantages and is not easy to cause stress fractures in the middle femur in patients with osteopenic Evans-Jensen Ⅳ intertrochanteric fractures. In particular, for patients with greater activity in the intertrochanteric fracture of the Evans-Jensen Ⅳ femur, InterTan fixation has better stability and provides a theoretical basis for the choice of internal fixation. |
| KEYWORDS:Femoral intertrochanteric fractures Fracture fixation,internal Finite element analysis |
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| 引用本文，请按以下格式著录参考文献： |
| 中文格式: | 郝连升,关涛,黄峰,陈健,穆胜凯,朱贵伟.InterTan治疗股骨转子间骨折有限元分析[J].中国骨伤,2019,32(2):176~180 |
| 英文格式: | HAO Lian-sheng,GUAN Tao,HUANG Feng,CHEN Jian,MU Sheng-kai,ZHU Gui-wei.Finite element analysis of InterTan for the treatment of femoral intertrochanteric fractures[J].zhongguo gu shang / China J Orthop Trauma ,2019,32(2):176~180 |
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