Application of 3-Dimensional Printing Guide Template and Pointed Lotus-Style Regulator in Percutaneous Pedicle Screw Fixation for Thoracolumbar Fractures

Abstract

This study aims to analysis the efficacy of the 3D printing percutaneous guide template in combination with the pointed lotus-style regulator in percutaneous pedicle screw fixation.60thoracolumbar fractures patients receiving percutaneous pedicle screw fixation (PPSF) were enrolled and randomly divided into 3 groups. Patients in Group A received traditional PPSF, while patients in Group B received PPSF with flat end lotus-style regulator and patients in Group C received PPSF with pointed lotus-style regulator. The experimental results showed that the highest number of pedicle screw successfully inserted by the first time was in group C, while lowest in group A (P<0.05). The total time of fluoroscopy and operation were lower in group C, and higher in group A (P<0.05). VAS and ODI scores were all lower after surgery than before surgery in 3groups. VAS and ODI scores were lower in group B and C, compared with group A at day 1 ,7 after surgery (P<0.05). KA decreased significantly in 3 groups after surgery and no difference in KA change between 3 groups (P>0.05). Taken together, Application of the 3D printing guide template in combination with pointed lotus-style regulator improved the accuracy of pedicle insertion.Trial registration: ClinicalTrials.gov Identifier: NCT04980131. Registered 18/07/2021.