载距突置钉模拟治疗Sanders Ⅲ型跟骨骨折的有限元分析

doi:10.16098/j.issn.0529-1356.2025.03.009

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解剖学报 ›› 2025, Vol. 56 ›› Issue (3) : 315-322. DOI: 10.16098/j.issn.0529-1356.2025.03.009

解剖学

载距突置钉模拟治疗Sanders Ⅲ型跟骨骨折的有限元分析

唐广胜^1,2 王琪²徐垚³王冰⁴孙健宁⁴王德广^2*

作者信息 +

Finite element analysis of simulated treatment of Sanders type Ⅲ calcaneal fractures with sustentacular screw placement of sustentaculum tali

TANG Guang-sheng^1,2 WANG Qi² XU Yao³ WANG Bing⁴ SUN Jian-ning⁴ WANG De-guang^2*

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摘要

目的构建应用载距突置钉模拟治疗Sanders Ⅲ型跟骨骨折的有限元分析模型，探讨治疗Sanders Ⅲ型跟骨骨折的有效性。方法取3例健康成年人的跟骨标本行微计算机断层扫描(Micro-CT)获取数据，Mimics 21.0、Geomagic Wrap 2017软件重建正常跟骨三维模型，SolidWorks 2017软件绘制内固定和骨折模型。将数据导入ANSYS 17.0有限元分析软件进行材料赋值及网格划分建立三维有限元模型，对各个模型施加载荷及边界约束执行有限元分析计算，提取有限元模型的受力情况与骨折端最大位移结果。结果采用载距突置钉方式模拟治疗Sanders Ⅲ型跟骨骨折模型是有效的，各个模型整体结构的最大应力集中于内固定上，其中涉及载距突骨折的最大应力、各骨折模型中螺钉的最大应力均位于载距突螺钉上。骨折端移位均<0.15 mm，且未出现内固定失效的情况。结论应用载距突置钉方式模拟治疗Sanders Ⅲ型跟骨骨折是有效的。

Abstract

Objective To construct a finite element analysis model for the treatment of calcaneal fracture for Sanders Ⅲ type calcaneal by using simulated sustentaculum tali sustentacular screw placement, and to explore the effectiveness of the treatment of Sanders type Ⅲ calcaneal fracture. Methods The finite element analysis method was used to study the effectiveness of the treatment of Sanders Ⅲ calcaneal fracture. Three calcaneal specimens of a healthy adult were taken for Micro-CT scanning to obtain the CT sections data, then Mimics 21.0 and Geomagic Wrap 2017 software were used to reconstruct the three-dimensional model of normal calcaneal bone, and SolidWorks 2017 software was used to map the internal fixation and fracture model according to the clinical fracture cases, and simulated surgery was performed. The data obtained were imported into ANSYS 17.0 finite element analysis software for material assignment and mesh division to establish a three-dimensional finite element model. The load and boundary constraints were applied to each model to perform finite element analysis and calculation, and then the stress of the finite element model and the maximum displacement of the fracture end were extracted. Results The maximum stress of the overall structure of each model was concentrated on internal fixation, in which the maximum stress of sustentaculum tali fracture and the maximum stress of screws in all fracture models are located on the sustentaculum tali sustentacular screw. The displacement of fracture end in each finite element model was less than 0.15 mm, and no internal fixation failure occurred. Conclusion It is effective to simulate the treatment of calcaneal fracture of Sanders type Ⅲ by using of sustentaculum tali sustentacular screw.

关键词

载距突置钉

/ Sanders Ⅲ型跟骨骨折 / 三维重建 / 有限元分析 / 模拟治疗 / 人

Key words

Sustentacular screw placement of sustentaculum tali

/ Sanders type Ⅲ calcaneal fracture / Three-dimensional reconstruction / Finite element analysis / Simulated treatment / Human

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唐广胜王琪徐垚王冰孙健宁王德广. 载距突置钉模拟治疗Sanders Ⅲ型跟骨骨折的有限元分析[J]. 解剖学报. 2025, 56(3): 315-322 https://doi.org/10.16098/j.issn.0529-1356.2025.03.009

TANG Guang-sheng WANG Qi XU Yao WANG Bing SUN Jian-ning WANG De-guang.

Finite element analysis of simulated treatment of Sanders type Ⅲ calcaneal fractures with sustentacular screw placement of sustentaculum tali

[J]. Acta Anatomica Sinica. 2025, 56(3): 315-322 https://doi.org/10.16098/j.issn.0529-1356.2025.03.009

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