| 经皮螺钉固定SchatzkerⅠ型胫骨平台骨折的初步有限元分析 |
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投稿时间：2021-01-21
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| 期刊信息：《中国骨伤》2022年，第35卷，第7期，第644-649页 |
| DOI：10.12200/j.issn.1003-0034.2022.07.010 |
| 基金项目:2010年辽宁省高等学校科研项目（编号：L2010652） |
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中文摘要:
目的:比较不同载荷下SchatzkerⅠ型胫骨平台骨折螺钉固定模型应力变化及位移情况建立。
方法：选取1例健康男性志愿者的膝关节三维CT图像建立3D模型，然后建立SchatzkerⅠ型胫骨平台骨折模型及螺钉固定模型。模拟各模型单脚站立和双脚站立时2种受力情况，观察并比较SchatzkerⅠ型骨折胫骨、劈裂骨块及空心螺钉应力变化以及骨折间位移情况。
结果：双足站立时，空心螺钉、劈裂骨块及胫骨的应力值最大的模型为改良三角支撑固定模型组，整体模型Z轴方向位移最大的模型为常规螺钉固定模型组。单足站立时，空心螺钉、劈裂骨块及胫骨的应力值最大的模型为改良三角支撑固定模型组，整体模型Z轴方向位移最大的模型为常规螺钉固定模型组。
结论：劈裂骨块及螺钉应力值最小的为栅栏螺钉固定模型，最大的为改良三角支撑固定模型。常规螺钉固定模型Z轴方向位移最大，栅栏螺钉模型与改良三角支撑螺钉模型位移相当。 |
| 【关键词】胫骨骨折 关节内骨折 螺钉固定 有限元分析 |
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| Preliminary finite element analysis of percutaneous screw fixation of Schatzker typeⅠ tibial plateau fracture |
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ABSTRACT
Objective: To compare the stress changes and displacement of SchatzkerⅠ tibial plateau fracture screw fixation model under different loads.
Methods: The three-dimensional CT images of the knee joint of a healthy male volunteer were selected to establish the three-dimensional model, and then the Schatzker I tibial plateau fracture model and screw fixation model were established. Simulate the two stress conditions of each model when standing on one foot and standing on two feet, the stress changes of tibia, split bone block and cannulated screw and the displacement between fractures were observed and compared.
Results: When standing on both feet, the model with the largest stress value of hollow screw, split bone block and tibia was the improved triangular support fixation model group, and the model with the largest displacement in the Z-axis direction of the overall model was the conventional screw fixation model group. When standing on one foot, the model with the largest stress value of hollow screw, split bone block and tibia was the improved triangular support fixation model group, and the model with the largest displacement in the Z-axis direction of the overall model was the conventional screw fixation model group.
Conclusion: The lowest stress value of split bone block and screw is the palisade screw fixation model, and the largest is the improved triangular support fixation model. The Z-axis displacement of the conventional screw fixation model is the largest, and the displacement of the fence screw model is equivalent to that of the improved triangular support screw model. |
| KEY WORDS Tibial fractures Intra-articular fractures Screw fixation 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: | 王丽.经皮螺钉固定SchatzkerⅠ型胫骨平台骨折的初步有限元分析[J].中国骨伤,2022,35(7):644~649 |
| 英文格式: | WANG Li.Preliminary finite element analysis of percutaneous screw fixation of Schatzker typeⅠ tibial plateau fracture[J].zhongguo gu shang / China J Orthop Trauma ,2022,35(7):644~649 |
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