〔Abstract〕Objective To construct a three-dimensional finite element model and evaluate the stress conduction anddistribution level of the distal radius with the help of three-dimensional finite element technology, so as to provide reference for clinical diagnosis. MethodsThe left forearm of healthy adult male was used as the study sample. CT technique was performed on the coronal plane of the longitudinal axis of the radius with a scanning interval of about 2 mm. CT detection data of the section was imported into the computer, and a 3D finite element model of the distal radius was constructed using 3D-Doctor (version 3.5). The model was placed in ANSYS (version 10.0), reasonable boundary conditions were set, and load processing was carried out. The stress transmission and distribution Settings were carried out for the distal radius, and the three-dimensional finite element evaluation was completed on the basis of this. Results CT technology was used to analyze the image information at all levels, and 3D-Doctor (version 3.5) was used to construct the distal radius model. According to the analysis of the finite element analysis data, if the symptoms of Colles fracture are present, the stress concentration of the radius where the dense bone and cancellous bone meet will be significantly increased, and the volar tensile stress will be significantly increased compared with the dorsal. In the presence of Smith fracture symptoms, there is a significant increase in stress concentration where the dense bone and cancellous bone of the radius meet, but the dorsal tensile stress is significantly stronger than the palmar. ConclusionCombined with CT technology and 3D-DOCTOR (version 3.5) to construct 3D finite element model, this method has the advantages of effectiveness and convenience, and the presented model has good accuracy. According to the finite element analysis data, the extensional crack of the radial fracture will occur in the palmar position where the dense bone and the cancellous bone meet on the radial surface.