Finite Element Analysis of Three-Dimensional Screws and Circular Plates for Treating Sanders Type Ⅲ AB Calcaneal Fracture
10.16156/j.1004-7220.2024.03.009
- VernacularTitle:三维组架螺钉与环形钢板治疗Sanders ⅢAB型跟骨骨折的有限元分析
- Author:
Hongyuan PAN
1
;
Dewei KONG
;
Yue LIU
;
Lulu GONG
;
Yiding ZHAO
;
Dece KONG
;
Jiaqi WANG
;
Zhi WANG
;
Tieyi YANG
;
Xinbin FAN
Author Information
1. 宁夏医科大学上海市浦东新区公利医院研究生培养基地,上海 200135
- Keywords:
calcaneal fracture;
three-dimensional(3D)screw;
circular plate;
bone block;
internal fixation
- From:
Journal of Medical Biomechanics
2024;39(3):435-441
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effects of three-dimensional(3D)screws and circular plates on the biomechanical stability of Sanders ABⅢ calcaneal fractures.Methods Calcaneal computed tomography(CT)and magnetic resonance imaging(MRI)data from a 26-year-old volunteer were collected to establish a 3D finite element model of Sanders ⅢAB calcaneal fracture fixed with 3D screws and circular plates.A longitudinal load of 700 N was applied to compare the variations in the stress,displacement of the bone block,and internal fixation in the different models.Results Under 700 N longitudinal loads,the maximum displacement of the bone block and the maximum stress of the bone block and internal fixation were concentrated at the intersection of the posterior talar articular plane internal fixation and fracture line.The overall displacements of the bone blocks in the 3D screw and circular plate models were similar.Compared with the circular plate model,the maximum and average stresses of the bone block and internal fixation in the 3D screw model were lower,and the displacement and stress changes of the 3D screw model were closer to those of the complete calcaneal bone model.Conclusions In the fixation of Sanders ⅢAB calcaneal fractures,both 3D screw and circular plate fixation method can provide good stability.The biomechanical properties of the 3D screws were better than those of the circular plates,which is consistent with the biomechanical characteristics.
