| Summary: | 碩士 === 國立中央大學 === 機械工程學系 === 103 === Pedicle screw is the primary tool for scoliosis or spinal deformities treatment. The treatment is to implant screws in both side’s pedicles of the vertebral body, and fixing abnormal vertebral by connected metal rod. And this process requires accurate screw implanting in the implementation of the surgery. In case of injuring the nerves and blood vessels, pedicle screws pass through the vertebral body. Physicians usually using computer navigation system to determine the position of implantation when performing operation. It is difficult using two-dimensional image to determine the three-dimensional structure of complex spine structure. Therefore, this study will use self-developed program to improved registration of the surgical procedure, and reduce the workload of physicians, increasing the accuracy of screw planting.
The developed registration program of this study will load CT images of patients by the software to create a computer model, and preoperative planning on the computer. Physicians enter only pedicle screw insertion point and approximate location, the program will generate its pedicle screw entrance path and calculate the maximum radius of implantable screw length, position and angle. Physicians also can be observed the position of the screw results calculated by program on the computer model. These data will be used to generate guide template after confirmed for physicians quickly find the pedicle screw location during surgery. By careful preoperative simulation and the assistance of guide template, spine surgery will be more efficient and safer.
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