Digital Measurement Of Children Thoracic Pedicle An Experimental Study Of Screw Placement Assisted By Navigation Template

Objective To investigate the children aged 4 to 12 thoracic pedicle for imaging observations, to grasp characteristics of children change in different periods of the pedicle for the clinical application of children’s fixation of pedicle screws provide a theoretical basis; 4 cases of children’s group was given traditional home body nails and navigation template assisted pedicle screw, of individual children’s home in the thoracic pedicle screw fixation in the accuracy and feasibility. Methods 60 patients without thoracic lesions in children 4 to 12 years of age were thin T₁ T₁₂ CT scan, save for the DICOM format, the use of Mimics13.0 software to read and measure the required data: （1） pedicle width （PW） ; （2） pedicle height （PH）; （3） pedicle screw path length （LS）; （4） and the sagittal pedicle axis angle （e angle）; （5） pedicle vertebra on the horizontal axis and the angle formed at the caudal （f angle）; selected 4 cases 7 to 9-year-old children were randomly divided into two groups with traditional pedicle screw fixation and navigation template assisted method for pedicle screw contrast, the search for more suitable for children Posterior fixation of thoracic surgical methods. Results 1. PW T₅ narrowest, T₁₂ widest, T₁ T₅ decreases, while T₆ T₁₂ and gradually increased; PH T₁ T₁₂ increases; LS T₁ minimum, T₁₂ longest, T₁ T₁₂ overall tended to increase; e maximum angle of T₁, T₁₀ minimum, T₁ T₁₀ decreases; and T₁₁, T₁₂ as a negative angle; f angle T₁ T₁₂ showed a decreasing trend; 2. pedicle screw accuracy of traditional France 58.3%; and individual digital navigation template of 81.3%. Conclusion MIMICS software and observing children’s thoracic reconstruction, can objectively reflect the real shape of thoracic, thoracic vertebrae to understand children’s growth and development of morphological characteristics and provide a theoretical basis; in the growth and development of children pedicle fixation, particular attention to screw diameter, length, direction into the screw to provide an accurate parameter to highlight the importance of the pedicle; individual navigation template assisted pedicle screw used in children’s high success rate, broad application prospects.