3D-Finite Element Analysis of External Fixation in Radial Shaft Fractures

Abstract

Background: Small external fixators are used mainly for fractures of the distal radius and forearm as well as for fractures in children and adolescents. The aim of this study was to evaluate biomechanical properties of external fixation in radial shaft fractures under loads including AP (anterior-posterior) bending, torsion and axial compression. Method: Biomechanical analysis was performed using 3D geometrical and FEM (Finite Element Method) models of the radial shaft fractures treated by external fixation and casting under three types of loads: AP (anterior-posterior) bending, torsion and axial compression according to levels of the radius. Results: The values of stiffness and displacement at the fracture sites of the radial shaft when treated with external fixation were lower compared to casting. Conclusion: For the radial shaft fractures, external fixation is more stable than casting biomechanically.

Keywords: Small external fixator, casting, displacement, stiffness, radius

Cite this Article

Jong-Min Choe, Hyo Sim, Mun-Sik Ko, Yong-Gun Jo, Dong-Won Mun, Song-Gun Pak. 3D-Finite Element Analysis of External Fixation in Radial Shaft Fractures. Research & Reviews: Journal of Surgery. 2020; 9(1): 8–24p.