In-vivo Three Dimensional Finite Element Analysis On Stress Of Radiocarpal Joint Surface For Capitatum Displacement

Objective: Employ the finite element method of'static loading'to analyze the stress distribution in the process of carpal distal radiocarpal joint surface after operation on capitatum displacement, in order to explore the rules for the diagnosis and treatment of kienb(O|¨)ck disease.Method: 1. Select a subject of postoperative man for 3 years, scanning his carpals using high-resolution CT. 2. Import CT images to the mimics 10.01 for three-dimensional reconstruction as the .DICOM format. 3. Export the result to the Geomagic 12.0 as .STL format and built the NURBS surface with unite quality. 4. Export the NURBS surface to the ANSYS Products 12.0 as the .IGES format. 5. Give the physical property's parameters of carpal bone and set the different conditions in terms of the static load. 6. Solve the effect of static load on the carpal distal radiocarpal joint surface.Result: The loads in postoperative carpal's surface are less than the normal carpal's distal radiocarpal joint surface in extension, intention, neutral positions.Discussion: It will occur traumatic osteoarthritis in postoperative carpal's surface lesss than the normal carpal's distal radiocarpal joint surface.