Abstract:Objective To explore the effect of 3D printing individualized navigation template in the treatment of lumbar spondylolisthesis with lumbar vertebral pedicle screw placement.Methods 60 cases of lumbar spondylolisthesis admitted to our hospital from March 2013 to March 2015 were randomly divided into the observation group (30 cases) and the control group (30 cases).The control group used the traditional three-dimensional CT reconstruction image before operation to make the operation plan,and the observation group used the 3D printing technique to make the operation plan before operation.Comparison of two groups of patients with operation time and blood loss,preoperative and postoperative 3 months,6 months after surgery,postoperative spinal cord function 12 months Japan Association (Japanese Orthopaedic Association,Department of orthopedics,JOA) score,visual analogue scale (visual analogue scale,VAS) of complications and postoperative changes.Results The operation time of the observation group was shorter than the control group,and the bleeding was less than the control group (P<0.05);add 12 months JOA score of two groups after 3 months and 6 months after surgery,postoperative (P<0.05);the JOA score of the observation group after 3 months and 6 months after surgery,surgery after 12 months was higher than the control group (P<0.05);reduced 12 months VAS score of two groups after 3 months and 6 months after surgery,postoperative (P<0.05);the VAS score of the observation group after 3 months and 6 months after surgery,12 months after the operation was lower than that of control group (P<0.05);the incidence of complications was lower than control group patients in the observation group,but the difference was not statistically significant (P>0.05).Conclusion 3D printing individualized navigation template assisted lumbar pedicle screw placement in the treatment of lumbar spondylolisthesis is significant and worthy of study.