Feasibility analysis of applying 3D printing technique to lumbar vertebral pedicle screw implantation
WANG Yahui
LIU Zhengpeng
Abstract：Objective To explore the feasibility of 3D printing technique for lumbar vertebral pedicle screw implantation.Method We selected the thin CT scan data of 40 healthy human lumbar vertebrae (L1-5),and designed the navigation in the pedicle center to obtain the navigation module.Through 3D printing technology,we printed out the navigation module and lumbar model,and implanted the lumbar vertebral pedicle screw with the assistant of navigation module.Meanwhile,we observed the entry point,screw direction and screw position clearly to determine whether the pedicle cortex was damaged or not.With the assistance of the navigation module,we performed lumbar pedicle screw implantation on adult lumbar (body) specimens and evaluated the placement effect.Results We applied the navigation module to perform 98 times of placement experiments (98 pedicle screws) in both the 3D printed lumbar models and adult lumbar specimens,including 18 times on L1,L2 22,L3 21,L4 19,and L5 18;no statistically significant difference was found between the virtual screw length and the actual screw length (all P ＞ 0.05).The entry point of all the screws,the direction of the screws and the position of the screw in the pedicle conformed to the predicted nail path,and all the other structures beside the pedicle were not damaged.Conclusion The 3D printing lumbar navigation module can guide the lumbar screw implantation,and the implanted screws have no deviation in the entry point,the direction of the nail entry and the fixed position.
Keywords：lumbar injury3D printing techniquenavigation modulepedicle screw implantation
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 9-11 )