Application of Patient-Specific Drill Template in the Thoracic and Cervical Pedicle Screw Implanta-tion:a Clinical Study
Abstract：Objective To investigate the accuracy and safety of patient-specific drill template in the thoracic and cervical pedi-cle screw implantation. Methods From July 2014 to November 2014,7 patients needed cervical and thoracic pedicle screw placements underwent CT scan,then Mimics 15. 0 was used to reconstruct 3D model of cervical and thoracic spine. The best drilling tracts and 3D model of patient-specific drill template were designed by Geomagic software. The 3D models above were used to print out with a rapid prototyping(RP)machine and the real drill templates were used to guide screws placement. 24 transpedicular screws were implanted into cervical and thoracic pedicle. The complications related to screws placement were re-corded. Results 23 of the 24 screws implanted by drill plate guidance were completed located in the pedicle. Just 1 screw vio-lation was observed,but the violation distance was less than 1. 2 mm. The placement accurate rate was 96% . The accuracy ac-ceptance rate was 100% . No neurovascular and visceral injury related-complications was noted. Conclusion Patient-specific biocompatible drill template is reliable and safe in the thoracic and cervical pedicle screw implantation.
Keywords：thoraciccervical3D rapid prototypingdrill templatepedicle screw
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 385-389 )