Preliminary finite element analysis of combining the transverse screw and tripod in the treatment of radial head and neck fractures
YANG Chun-yuan
BU Fan-wang
ZHANG Han-chi
HUANG Xiang-ting
WANG Yao
SHEN Bing-jie
MA Yue-tong
JIN Wan-tong
Abstract：Objective To compare the stress changes and displacement of radial head and neck fractures with different fixations under different loads.Methods The images of the elbow joint of one healthy male volunteer were randomly selected to establish a 3D model of Mason radial head and neck fracture,and the fracture models were fixed with different screw structures to compare the stress changes and displacement under different loads.Results Under the axial load of 100 N,the average maximum peak value of internal fixation stress was in group C(Short),and the average minimum peak value of internal fixation stress was in group B(Transverse).The average maximum bone stress peak was in group C,and the average minimum bone stress peak was in group B.The average maximum displacement of the model was in group C,and the average minimum displacement of the model was in group B.Under the axial 100 N load and the 20 N shear load,there was no significant difference between the average internal fixation stress peak value in group A(Standard)and group C,and it was higher than that in group B.The average maximum bone stress peak was in group C.The average maximum displacement of the model was in group C,and the average minimum displacement of the model was in group B.Conclusions In the tripod screw structure,the interfracture displacement is smaller and the overall structural strength is greater when the screw intersection is far away from the neck fracture line;the interfracture displacement is smaller and the overall structural strength is greater when combined with the transverse screw,which can increase the overall structural stability.
Keywords：Radius fracturesFracture fixationinternalFinite element analysis
Publication Date：2025-09-19
Online Publishing Date：2025-09-29(First online date of this platform, not the publication date of the document)
Pages：8( 795-802 )