z-bio 2021-01-29 282

　　Purpose: To study the effect of sand therapy temperature on bone reconstruction experiment and the numerical simulation of heat transfer.

　　 Method: CT scans were used to perform 4 scans (1 before and after the establishment of the OA model of the experimental subject, 1 time each after the first week and the second week after the sand therapy). Import the scanned data into the MIMICS software, analyze the changes in the bone mass of each femoral layer, divide the muscles, femurs and bone marrow after assembly, and import the STL format of the established 3D model into the COMSOL software for heat transfer simulation and temperature analysis The effect of the stress generated by the field on bone reconstruction.

　　Result: Analyze the changes of 4 CT scan data and thermal stress simulation. Under the thermal stress environment generated by sand therapy temperature, the volume of soft bone decreases, while the volume of dense and hard bone increases. Numerical simulation of heat transfer well reflects the temperature distribution of the thigh and femur.

　　 Conclusion: The thermal stress generated by the sand therapy temperature on the femur promotes bone reconstruction.