Finite element analysis of the stability of Mason type Ⅲ radial head fracture fixed with three cross-bridge headless compression screw and locking plate
Finite element analysis of the stability of Mason type Ⅲ radial head fracture fixed with three cross-bridge headless compression screw and locking plate
Objective To compare the biomechanical stability of three cross-bridge headless compression screws and lock-ing plates in the fixation of Mason type Ⅲ radial head fractures by finite element method.Methods Using reverse modeling technology,the radial CT data and internal fixation data of a healthy 25-year-old male were imported into the relevant software.Three-dimensional finite element model of 3 cross-bridge headless compression screws and locking plates for Mason Ⅲ radial head fractures were established,and the radial head was loaded with 100 N axial loading.The maximum displacement,maxi-mum Von Mises stress and stress distribution of the two groups were compared.Results The maximum displacements of the three cross-bridge screws group and locking plate group were 0.069 mm and 0.087 mm respectively,and the Von Mises stress peaks were 18.59 MPa and 31.85 MPa respectively.The stress distribution of the three screws group was more uniform.Con-clusion Both internal fixation methods can provide good fixation effect.CoMPared with the locking plate fixation method,the 3 cross-bridge headless compression screws fixation is more stable and the stress distribution is more uniform.
关键词
桡骨头骨折/埋头钉/锁定钢板/有限元分析
Key words
Radial head fracture/Headless compression screw/Locking plate/Finite element analysis
维普
万方数据