The Utility of a Digital Virtual Template for Junior Surgeons in Pedicle Screw Placement in the Lumbar Spine

Figure 1

3D CT construction of lumbar spine has four images. By removing the mouse symbol on the surface of the 3D image of the superior articular process, the corresponding points on the other images are removed. When the tangent line of the point divides equally the pedicle on sagittal and cross-sectional plane images simultaneously, the point of mouse indicates an ideal position of the entry point on the surface of the superior articular process.