Accuracy of pedicle screw placement by fluoroscopy, a three-dimensional printed model, local electrical conductivity measurement device, and intraoperative computed tomography navigation in scoliosis patients

2020 ◽  
Author(s):  
Hitoshi Kudo ◽  
Kanichiro Wada ◽  
Gentaro Kumagai ◽  
Sunao Tanaka ◽  
Toru Asari ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Electrical Conductivity ◽  
Pedicle Screw ◽  
Three Dimensional ◽  
Conductivity Measurement ◽  
Screw Placement ◽  
Pedicle Screw Placement ◽  
Electrical Conductivity Measurement ◽  
Measurement Device ◽  
Intraoperative Computed Tomography

Pediatric Pedicle Screw Placement Using Intraoperative Computed Tomography and 3-Dimensional Image-Guided Navigation

Spine ◽  
2012 ◽  
Vol 37 (3) ◽  
pp. E188-E194 ◽  
Author(s):  
A. Noelle Larson ◽  
Edward R. G. Santos ◽  
David W. Polly ◽  
Charles G. T. Ledonio ◽  
Jonathan N. Sembrano ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Pedicle Screw ◽  
Screw Placement ◽  
Pedicle Screw Placement ◽  
Intraoperative Computed Tomography ◽  
3 Dimensional ◽  
Dimensional Image ◽  
Image Guided

Cervical pedicle screw placement using intraoperative computed tomography imaging with a mobile scanner gantry

2016 ◽  
Vol 25 (6) ◽  
pp. 1690-1697 ◽  
Author(s):  
Toshitaka Yoshii ◽  
Takashi Hirai ◽  
Kenichiro Sakai ◽  
Hiroyuki Inose ◽  
Tsuyoshi Kato ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Pedicle Screw ◽  
Screw Placement ◽  
Pedicle Screw Placement ◽  
Computed Tomography Imaging ◽  
Cervical Pedicle Screw ◽  
Tomography Imaging ◽  
Intraoperative Computed Tomography ◽  
Cervical Pedicle

scholarly journals Postoperative 320 multi-slice computed tomography in assessment of pedicle screw insertion in thoraco-lumbar fixation

2019 ◽  
Vol 50 (1) ◽  
Author(s):  
Alsiagy A. Salama ◽  
Mohamed A. Amin ◽  
Ahmed Y. Soliman ◽  
Ahmed El-Tantaway
Keyword(s):  
Computed Tomography ◽  
Pedicle Screw ◽  
Assessment Tool ◽  
Three Dimensional ◽  
Screw Placement ◽  
Spinal Fixation ◽  
Pedicle Screw Placement ◽  
Screw Insertion ◽  
Postoperative Assessment ◽  
Reformatted Ct

Abstract Background Pedicle screw instrumentation is used widely in lumbar spine for stabilization to enhance arthrodesis and has been accepted in the thoracic spine in recent years. The purpose of this study was to assess the value of postoperative 320 multi-slice computed tomography (MSCT) in assessment of pedicle screw placement in patients with spinal fixation with clinical and surgical correlation. Results A total of 340 pedicular screws were inserted to 70 cases. 286 (84.12%) were in, 54 screws (15.88%) were violated, and revision surgeries were required for 5 displaced screws. On axial, coronal reconstruction and three-dimensional (3D) reformatted CT images 36, 47, and 54 displaced screws were detected, respectively. Both sensitivity and specificity for 3D reformatted images were 100%. For axial image, they were 97.6% and 89.4%, respectively, compared with surgical findings in 5 revised screws. Conclusion Multi-slice CT scan is a valuable and valid postoperative assessment tool of accuracy of spinal pedicle screw placement.

Deviation analysis for C1/2 pedicle screw placement using a three-dimensional printed drilling guide

2017 ◽  
Vol 231 (6) ◽  
pp. 547-554 ◽  
Author(s):  
Xinghuo Wu ◽  
Rong Liu ◽  
Jie Yu ◽  
Lin Lu ◽  
Cao Yang ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Pedicle Screw ◽  
Three Dimensional ◽  
Pedicle Screws ◽  
Accurate Method ◽  
Pedicle Screw Fixation ◽  
Screw Placement ◽  
Pedicle Screw Placement ◽  
Entry Points ◽  
Computed Tomography Scans

Cervical transarticular fixation is a technically demanding procedure. This study aimed to develop a safer and more accurate method for C1/2 pedicle screw placement using a three-dimensional printed drilling guide. A total of 20 patients with C1/2 fractures and dislocations were recruited, and their computed tomography scans were evaluated. Under the assistance of the three-dimensional printed drilling guide, bilateral C1/2 pedicle screws were successfully placed in the three-dimensional C1/2 models. Then, sagittal and axial computed tomography scans were obtained, and the accuracy and safety of screw placement were evaluated based on X-Y-Z axis setup. The average depths for C1 and C2 pedicle screws were 30.1 ± 1.12 and 31.81 ± 0.85 mm on the left side and 29.54 ± 1.01 and 31.35 ± 0.27 mm on the right side, respectively. The average dimensional parameters for C1/C2 pedicle screw of both sides were measured and analyzed, which showed no statistically significant differences in the ideal and the actual entry points, inclined angles, and tailed angles. The method of developing a three-dimensional printed drilling guide is an easy and safe technique. This novel technique is applicable for C1/2 pedicle screw fixation; the potential use of the three-dimensional printed guide to place C1/2 pedicle screw is promising.

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