沙疗温度及血液灌注对膝关节温度场和应力场的影响

为探究沙疗过程中沙体温度及血液灌注率对于人体膝关节部位温度场分布以及骨骼热应力的影响,在生物传热学以及经典力学的理论基础上,通过运用将膝关节部位的计算机断层扫描(computed tomography,CT)影像数据导入3D逆向建模软件Mimics建立三维模型,并将模型导入COMSOL软件并进行传热数值模拟的方法来研究...

Effects of sand therapy temperature and blood perfusion on temperature and stress field of knee joint

In order to explore the influence of sand temperature and blood perfusion rate on the temperature field distribution and bone thermal stress of human knee joint during sand therapy, Based on the theory of biological heat transfer and classical mechanics, The variation of temperature field and thermal stress of knee joint during sand treatment was studied by importing CT image data of knee joint into 3D reverse modeling software Mimics to establish a 3D model, and importing the model into Comsol software to conduct numerical simulation of heat transfer. The results showed that the temperature and stress of the knee bones were mainly concentrated on the patella and the tibia, especially on the long bone of the tibia. According to the curve of bone thermal stress change, the average bone thermal stress reached its peak at 20min of sand treatment, showed a downward trend within 20 to 30 minutes, and gradually decreased after 30 minutes with the increase of time. The best time for sand therapy is about 20 minutes, but not more than 30 minutes at most. The blood perfusion rate plays an important role in regulating the temperature field and stress field of human body during sand treatment.