Finite Element Analysis of Kirschner Wire Treatment for SH-ⅡDistal Femoral Fracture in Children
10.16156/j.1004-7220.2024.04.012
- VernacularTitle:利用克氏针治疗儿童股骨远端骨骺损伤的有限元分析
- Author:
Xiaoming WANG
1
;
Xiaowei WANG
;
Huan'an BAI
;
Yating YANG
;
Qiang JIE
Author Information
1. 西安交通大学附属红会医院儿童病医院,西安 710054
- Keywords:
pediatric fracture;
fracture fixation;
epiphyses;
femoral fracture;
Kirschner wire;
finite element analysis
- From:
Journal of Medical Biomechanics
2024;39(4):651-656
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare the stability of different Kirschner wire configurations for treating SH-Ⅱ type epiphyseal injury and damage to the epiphyseal plate in children.Methods The CT scanning data of a healthy femur from an eight-year-old child were collected;the image data were imported into Mimics 21.0 to establish a rough femoral and epiphyseal model,which was then imported into Geomagic 2013 to construct a surface model.The surface model was assembled in SolidWorks 2018 with three configurations(dispersed,double-crossed,and single-crossed K-wires)and then imported into ANSYS Workbench 2019.Various motion modes in reality were simulated through different mechanical loadings on the assembly.The maximum displacement of the fracture fragment,von Mises stress distribution,and maximum stress on the K-wire,epiphyseal plate,and fracture fragment were analyzed.Results The maximum displacements of the dispersed,double-crossed,and single-crossed K-wire groups occurred during abduction(2.39 mm),adduction(2.12 mm),and abduction(2.21 mm),and the maximum stress on the epiphyseal plate occurred during abduction(1.22 MPa),anterior flexion(0.20 MPa),and posterior extension(0.29 MPa),respectively.Conclusions The stability of the double-crossed K-wire configuration is superior to that of the dispersed and single-crossed K-wire configurations,with minimal damage to the epiphysis.
