Three-Dimensional Modeling And Finite Element Analysis Of Radial Wedge Osteotomy For Treating Kienbock’s Disease

Objective: Research radiocarpal joint stress distribution and changes afterapplication of radial wedge osteotomy.Method:1. Select a patient who had Kienbck disease, respectively usinghigh-resolution CT machine scanning his own carpals of preoperative andpostoperative, the wrist of postoperative was seted the surgical group, before thehand wrist surgery was seted the control group (non-surgical group).2. Savedthe hands wrist tomography data as. DICOM format and import it into Mimics10.01software CT to establish the wrist bones digitized three-dimensional, thenthe reconstruction was saved as. STL format.3. Imported the files of.STL intoGeomagic Studio12.0to build surfaces, after finished build surfaces, saved as.IGES format.4. Put the results into Hypermesh software automatically meshed,go to finishing the surface point cloud number, last saved as. Inp format andenter into Mimics10.01software to build complex and accuratethree-dimensional geometric model.5. Imported the model into HYPERMESHsoftware, according to the nature of physics and parameter values of the articularsurface force characteristics to simulate conditions,5N is applied perpendicularto the non-surgical group radiocarpal joint surface, the same as the the surgicalgroup,6. analyse the result of static load on the carpal distal radiocarpal joint surface.Results: The application of radial wedge osteotomy, within load the stressarticular cartilage can withstand, radial distal scaphoid fossa, the nest radiolunateconductivity maximum load is less than the preoperative.Discussion: After the application of radial wedge osteotomy to modify the angleof declination of radiocarpal joint,it can improve the radial-lunate forcedistribution.