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中华关节外科杂志(电子版) ›› 2024, Vol. 18 ›› Issue (06) : 736 -741. doi: 10.3877/ cma.j.issn.1674-134X.2024.06.006

基础论著

腓骨远端后侧与外侧钢板治疗外踝骨折的有限元分析
杨尚晟1,2, 刘义2, 王伟1,2, 李嘉1,2, 王键1,2, 田明昊1,2, 吴迪2,()   
  1. 1.650500 昆明医科大学
    2.650032 昆明医科大学第一附属医院
  • 收稿日期:2024-04-19 出版日期:2024-12-01
  • 通信作者: 吴迪
  • 基金资助:
    云南省临床医学研究中心子课题(202102AA310068)

Finite element analysis of posterior and lateral plates in treatment of lateral malleolus fracture

Shangsheng Yang1,2, Yi Liu2, Wei Wang1,2, Jia Li1,2, Jian Wang1,2, Minghao Tian1,2, Di Wu2,()   

  1. 1.Kunming Medical University, Kunming 650500, China
    2.Trauma Center, First Affiliated Hospital of Kunming Medical University,Kunming 650032, China
  • Received:2024-04-19 Published:2024-12-01
  • Corresponding author: Di Wu
引用本文:

杨尚晟, 刘义, 王伟, 李嘉, 王键, 田明昊, 吴迪. 腓骨远端后侧与外侧钢板治疗外踝骨折的有限元分析[J/OL]. 中华关节外科杂志(电子版), 2024, 18(06): 736-741.

Shangsheng Yang, Yi Liu, Wei Wang, Jia Li, Jian Wang, Minghao Tian, Di Wu. Finite element analysis of posterior and lateral plates in treatment of lateral malleolus fracture[J/OL]. Chinese Journal of Joint Surgery(Electronic Edition), 2024, 18(06): 736-741.

目的

分析腓骨远端后侧钢板和腓骨远端外侧钢板在治疗踝关节旋后外旋型Ⅱ度骨折时的生物力学优缺点。

方法

运用Medical 21.0、Geomagic、Solidworks等计算机有限元软件进行旋后外旋Ⅱ度骨折模型和两种钢板模型的创建。使用Ansys软件模拟两种运动状态下骨骼和钢板的受力以及骨折端的位移等观察指标,比较两种钢板治疗外踝骨折的生物力学差异。

结果

两种状态下的腓骨远端后侧钢板在内固定模型应力、内固定骨折模型整体应力以及腓骨模型应力数值以及位移云图表现优于外侧钢板。

结论

腓骨远端后侧钢板在治疗外踝骨折的抗压缩、旋转等方面的生物力学效果要优于外侧钢板,再加上其良好的软组织适应性等优点,新型腓骨远端后侧钢板的临床应用价值要明显优于外侧钢板。

Objective

To analyze the biomechanical advantages and disadvantages of posteriorlateral plates versus lateral plates in the treatment of supination-external rotaion type II fractures of the distal fibula.

Methods

The ankle fracture model and two plate models were created by using computer finite element software such as Medical 21.0, Geomagic and Solidworks. Ansys software was used to simulate the stress and fracture displacement of the ankle joint and plate models under two motion states, and to compare the biomechanical differences of the two plates in the treatment of ankle fractures.

Results

Under both loading conditions, the posterior-lateral plate exhibited superior performance compared to the lateral plate, as evidenced by lower stress values in the internal fixation model, overall stress in the fracture model, and stress distribution in the fibula model, along with improved displacement contour maps.

Conclusion

The posterior-lateral plate demonstrates superior biomechanical properties in terms of compressive strength and rotational stability compared to the lateral plate in the treatment of lateral malleolus fractures; coupled with its favorable soft tissue compatibility, the clinical application value of the new posterior-lateral plate is significantly greater than that of the lateral plate.

图1 Mimics提取的骨骼模型
Figure 1 Bone model designed by Mimics
图2 使用Geomagic处理后的三维模型
Figure 2 Three-dimentional model processed by Geomagic
图3 腓骨远端外侧钢板模型
Figure 3 Lateral plate model of distal fibula
图4 腓骨远端后侧钢板模型
Figure 4 Posterior plate model of distal fibula
图5 材料特性
Figure 5 Mechanical properties of materials
图6 踝关节主要韧带的刚度值
Figure 6 The stiffness of the major ligaments
图7 变化比图表
Figure 7 Change ratio histogram
图8 内固定应力云图
Figure 8 Cloud diagrams of bone stress distribution of fixation
图9 内固定-骨折应力云图
Figure 9 Cloud diagrams of bone stress distribution of fixationfracture
图10 腓骨应力云图
Figure 10 Cloud diagrams of bone stress distribution of fibula
图11 内固定应力云图
Figure 11 Cloud diagrams of bone stress distribution of fixation
图12 内固定-骨折应力云图
Figure 12 Cloud diagrams of bone stress distribution of fixationfracture
图13 腓骨应力云图
Figure 13 Cloud diagrams of bone stress distribution of fibula
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