Zheng Yi, Zhang Jia-Kai, Wu Jun-Long, Yuan Xin-Hua
Department of Orthopaedics, Ningbo No.2 Hospital, Ningbo 315010, Zhejiang, China.
Zhongguo Gu Shang. 2024 Sep 25;37(9):917-20. doi: 10.12200/j.issn.1003-0034.20220970.
To explore establishment and finite element analysis of personalized proximal clavicular anatomical plate screw fixation model.
A 40-year-old male healthy volunteer was selected and the finite element analysis modules of 3D reconstruction software Mimics 15.01, Hypermesh 2019 and Abaqus 2020 were used. The finite element model of anatomic plate at the proximal clavicle was established, and a vertical load of 250 N was applied to the distal end of long axis of clavicle about 15 mm, then the overall structure, plate and screw displacement cloud image, Mises stress distribution were observed.
The displacement distribution of the overall structure shows the maximum displacement was distributed on the distal clavicle. Under the four conditions of normal upper limb weight, longitudinal clavicle fracture, oblique fracture and shoulder impact violence during fall, longitudinal clavicle fracture and oblique fracture, the maximum displacement were 1.04 mm, 1.03 mm, 1.35 mm and 1.33 mm, respectively. The displacement cloud map of titanium alloy steel plate showed the largest displacement was distributed near the distal clavicular bone, and the maximum displacement were 0.89 mm, 0.88 mm, 1.10 mm and 1.09 mm, respectively. The displacement cloud map of titanium alloy screw showed the largest displacement was distributed at the root of the distal screw, and the maximum displacement were 0.88 mm, 0.87 mm, 1.08 mm and 1.06 mm, respectively. Mises stress distribution showed the maximum stress was mainly distributed on titanium alloy plates and screws, and the stress on the clavicle was very small. Mises stress distribution cloud showed the maximum Mises stress was distributed at the second row of screw holes near the clavicle, and the maximum Mises stress were 673.1, 678.1, 648.5, 654.4 MPa, respectively. The maximum stresses of titanium alloy screws were 414.5, 417.4, 415.8 and 419.7 MPa, respectively.
The biomechanical changes of personalized proximal clavicular anatomical plates are demonstrated by using 3D finite element method to provide biomechanical data for personalized proximal clavicular anatomical plates.
探讨个性化锁骨近端解剖钢板螺钉内固定模型的建立及有限元分析。
选取一名40岁男性健康志愿者，应用三维重建软件Mimics 15.01、Hypermesh 2019和Abaqus 2020的有限元分析模块，建立锁骨近端解剖钢板的有限元模型，在锁骨长轴远端约15 mm处施加250 N的垂直载荷，观察整体结构、钢板及螺钉位移云图、米塞斯应力分布情况。
整体结构位移分布显示最大位移分布在锁骨远端。在正常上肢重量、锁骨纵向骨折、斜形骨折及跌倒时肩部撞击暴力这四种情况下，锁骨纵向骨折和斜形骨折时的最大位移分别为1.04 mm、1.03 mm、1.35 mm和1.33 mm。钛合金钢板位移云图显示最大位移分布在锁骨远端骨附近，最大位移分别为0.89 mm、0.88 mm、1.10 mm和1.09 mm。钛合金螺钉位移云图显示最大位移分布在远端螺钉根部，最大位移分别为0.88 mm、0.87 mm、1.08 mm和1.06 mm。米塞斯应力分布显示最大应力主要分布在钛合金钢板和螺钉上，锁骨上的应力很小。米塞斯应力分布云图显示最大米塞斯应力分布在锁骨附近第二排螺孔处，最大米塞斯应力分别为673.1、678.1、648.5、654.4 MPa。钛合金螺钉的最大应力分别为414.5、417.4、415.8和419.7 MPa。
采用三维有限元方法展示了个性化锁骨近端解剖钢板的生物力学变化，为个性化锁骨近端解剖钢板提供了生物力学数据。
