The Study of the Percutaneous Laser Disc Decompression

The purpose of this study is to discuss the temperature and stress distribution problem of the interverbral disc while the surgical operation of PLDD is processing. This study also further discuss the water content of disc changes with age to cause variation of thermal conductivity thermal expansion coefficient specific heat and related parameters, and the effect of thermal conductivity related about the patient’s age will be illustrated. The 3D thermal structure conjugated model of the multiphysics analysis algorithm is used to understand the temperature and stress distribution of the whole domain and heat transfer phenomena under the different kinds of laser heating rate and patients. The temperature profile of the intervertebral disk is obtained and reveals the relations among the parameters. The temperature profile is predicted as the heat transfer phenomena can be handled on the surgical process. In the future, we expect that this result can be used to handle the PLDD in the pre-surgical simulation.