The Application Of Finite Element Analysis In The Study Of The Mechanism Of TCM Bone-setting Manipulation In The Treatment Of Colles Type Distal Radius Fracture

Objective:Subject to medical 3D reconstruction technology and technique of finite element analysis method is introduced into the palasy study,distal radius fractures as the research object,through the establishment of colles type and verify the validity of the distal radius fracture model,simulation of traditional Chinese medicine boneseting manipulation,biomechanics analysis,studies the mechanism of action of palasy technique.Methods:Through the early establishment of the distal radius model,combined with the finite element analysis method,the model was divided into grids and given material properties,so as to make it become a real human physical characteristics of the finite element model,to establish a realistic colles type distal radius fracture three-dimensional geometric model.Based on the distal radius fracture model,parameters of bone-setting manipulation were decomposed and gradually loaded onto the fracture model.Finite element software was used for calculation to observe the stress and strain and analyze the calculation results.Compared with the previous research data,the validity of this method is verified.Results:Using ANSYS software,the model was loaded to simulate the traditional Chinese medicine bone-setting manipulation,and the stress and strain results of the broken bone were obtained:the maximum displacement of 100N longitudinal axis was 0.1 8cm,and the maximum displacement of 200N longitudinal axis was 0.36cm.and the stress was mainly concentrated on the radial wrist surface and the dorsal edge.The maximum displacement of 100N transverse axis was 0.22cm,and the maximum displacement of 200N longitudinal axis was 0.44cm.The stress was mainly concentrated in the dorsal,margin of radial wrist joint.Conclusion:Fractures of the distal radius can be reduced by manipulation.It is feasible to study the method of traditional Chinese medicine bone-setting manipulation through finite element analysis,avoid the external interference of physical experiment,can better control the influencing factors of the experiment,and can repeat the experiment;At the time of Colles fracture,the radial dorsal stress was more concentrated than the volar one,the dorsal fracture was stress fracture,and the volar fracture was tension fracture.Longitudinal axial traction of the distal radial fracture was 0.18cm with 100N force,0.44cm with 200N force,and transverse axial compression was 0.22cm with 100N force,0.44cm with 200N force.Tf the displacement distance of the distal radius fracture is small,the reduction can be achieved by direct traetion and pressing manipulation.Greater traction is required to reduce the fracture if the end is displaced at a greater distance or angulated.Distal radius fracture process of cosco,however,the broken bones of stress concentration in the radial side of wrist dorsal surface,reset is too large,especially for older patients,may cause secondary damage,therefore,often need clever apply fold the top technique,avoid too rough,can be used as a reference of clinical gimmick reset operation.