3D Printed Tubular Guides for Pedicle Screw Placement: The Answer for the Need of a Greater Accuracy in Spinal Stabilization

2015 ◽  
Vol 04 (03) ◽  
Author(s):  
Alessandro Landi
Keyword(s):  
Pedicle Screw ◽  
Screw Placement ◽  
Pedicle Screw Placement ◽  
Spinal Stabilization ◽  
3D Printed

scholarly journals Utilization of the 3D-printed spine model for freehand pedicle screw placement in complex spinal deformity correction

2018 ◽  
Vol 4 (2) ◽  
pp. 319-327 ◽  
Author(s):  
Lee A. Tan ◽  
Ketan Yerneni ◽  
Alexander Tuchman ◽  
Xudong J. Li ◽  
Meghan Cerpa ◽  
...  
Keyword(s):  
Pedicle Screw ◽  
Spinal Deformity ◽  
Deformity Correction ◽  
Screw Placement ◽  
Pedicle Screw Placement ◽  
Spine Model ◽  
3D Printed

scholarly journals Accuracy assessment of pedicle screw insertion with patient specific 3D‑printed guides through superimpose CT-analysis in thoracolumbar spinal deformity surgery

2021 ◽  
Author(s):  
J. Cool ◽  
J. van Schuppen ◽  
M. A. de Boer ◽  
B. J. van Royen
Keyword(s):  
Pedicle Screw ◽  
Spinal Deformity ◽  
Screw Placement ◽  
Patient Specific ◽  
Pedicle Screw Placement ◽  
Screw Insertion ◽  
Pedicle Screw Insertion ◽  
Spinal Deformity Surgery ◽  
Ct Analysis ◽  
3D Printed

Abstract Purpose In order to avoid pedicle screw misplacement in posterior spinal deformity surgery, patient specific 3D‑printed guides can be used. An accuracy assessment of pedicle screw insertion can be obtained by superimposing CT-scan images from a preoperative plan over those of the postoperative result. The aim of this study is to report on the accuracy of drill guide assisted pedicle screw placement in thoracolumbar spinal deformity surgery by means of a superimpose CT-analysis. Methods Concomitant with the clinical introduction of a new technique for drill guide assisted pedicle screw placement, the accuracy of pedicle screw insertion was analyzed in the first patients treated with this technique by using superimpose CT-analysis. Deviation from the planned ideal intrapedicular screw trajectory was classified according to the Gertzbein scale. Results Superimpose CT-analysis of 99 pedicle screws in 5 patients was performed. The mean linear deviation was 0.92 mm, the mean angular deviation was 2.92° with respect to the preoperatively planned pedicle screw trajectories. According to the Gertzbein scale, 100% of screws were found to be positioned within the “safe zone”. Conclusion The evaluated patient specific 3D-printed guide technology was demonstrated to constitute a safe and accurate tool for precise pedicle screw insertion in spinal deformity surgeries. Superimpose CT-analysis showed a 100% accuracy of pedicle screw placement without any violation of the pedicle wall or other relevant structures. We recommend a superimpose CT-analysis for the first consecutive patients when introducing new technologies into daily clinical practice, such as intraoperative imaging, navigation or robotics.

scholarly journals 3D printed templates improve the accuracy and safety of pedicle screw placement in the treatment of pediatric congenital scoliosis

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Jun Cao ◽  
Xuejun Zhang ◽  
Haonan Liu ◽  
Ziming Yao ◽  
Yunsong Bai ◽  
...  
Keyword(s):  
Cobb Angle ◽  
Pedicle Screw ◽  
Three Dimensional ◽  
Congenital Scoliosis ◽  
Screw Placement ◽  
Accuracy Rate ◽  
Kyphosis Angle ◽  
Pedicle Screw Placement ◽  
3D Printed ◽  
Main Curve

Abstract Background Three-dimensional (3-D) printed guidance templates are being increasingly used in spine surgery. The purpose of this study was to determine if 3D printed navigation templates can improve the accuracy of pedicle screw placement and decrease the complication rate compared to freehand screw placement in the treatment of children with congenital scoliosis. Methods The records of pediatric patients with congenital scoliosis treated at our hospital from January 2017 to January 2019 were retrospectively reviewed. Patients were divided into those where a 3D printed guidance templated was used and those in which the freehand method was used for pedicle screw placement. The accuracy rate of pedicle screw placement, surgical outcomes, and complications were compared between groups. Results A total of 67 children with congenital scoliosis were included (43 males and 24 females; mean age of 4.13 ± 2.66 years; range, 2–15 years). There were 34 children in the template-assisted group and 33 in the freehand group. The excellent accuracy rate of pedicle screw placement was significantly higher in the template-assisted group (96.10% vs. 88.64%, P = 0.007). The main Cobb angle and kyphosis angle were similar between the 2 groups preoperatively and postoperatively (all, P > 0.05), and in both groups both angles were significantly decreased after surgery as compared to the preoperative values (all, P < 0.001). The degree of change of the Cobb angle of the main curve and kyphosis angle were not significantly different between the 2 groups. There were no postoperative complications in the template group and 4 in the freehand group (0% vs. 12.12%; P = 0.009). All 4 patients with complications required revision surgery.

scholarly journals 3D Printed Templates Improve the Accuracy and Safety of Pedicle Screw Placement in the Treatment of Pediatric Congenital Scoliosis

2021 ◽  
Author(s):  
Jun Cao ◽  
Xuejun Zhang ◽  
Haonan Liu ◽  
Ziming Yao ◽  
Yunsong Bai ◽  
...  
Keyword(s):  
Cobb Angle ◽  
Pedicle Screw ◽  
Three Dimensional ◽  
Congenital Scoliosis ◽  
Screw Placement ◽  
Accuracy Rate ◽  
Kyphosis Angle ◽  
Pedicle Screw Placement ◽  
3D Printed ◽  
Main Curve

Abstract Background: Three-dimensional (3-D) printed guidance templates are being increasingly used in spine surgery. The purpose of this study was to determine if 3D printed navigation templates can improve the accuracy of pedicle screw placement and decrease the complication rate compared to freehand screw placement in the treatment of children with congenital scoliosis. Methods: The records of pediatric patients with congenital scoliosis treated at our hospital from January 2017 to January 2019 were retrospectively reviewed. Patients were divided into those where a 3D printed guidance templated was used and those in which the freehand method was used for pedicle screw placement. The accuracy rate of pedicle screw placement, surgical outcomes, and complications were compared between groups.Results: A total of 67 children with congenital scoliosis were included (43 males and 24 females; mean age of 4.13 ± 2.66 years; range, 2-15 years). There were 34 children in the template-assisted group and 33 in the freehand group. The excellent accuracy rate of pedicle screw placement was significantly higher in the template-assisted group (96.10% vs. 88.64%, P = 0.007). The main Cobb angle and kyphosis angle were similar between the 2 groups preoperatively and postoperatively (all, P > 0.05), and in both groups both angles were significantly decreased after surgery as compared to the preoperative values (all, P < 0.001). The degree of change of the Cobb angle of the main curve and kyphosis angle were not significantly different between the 2 groups. There were no postoperative complications in the template group and 4 in the freehand group (0% vs. 12.12%; P = 0.009). All 4 patients with complications required revision surgery.

scholarly journals Pedicle screw placement in spinal neurosurgery using a 3D-printed drill guide template: a systematic review and meta-analysis

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Chengqiang Yu ◽  
Yufu Ou ◽  
Chengxin Xie ◽  
Yu Zhang ◽  
Jianxun Wei ◽  
...  
Keyword(s):  
Blood Loss ◽  
Pedicle Screw ◽  
Operative Time ◽  
Meta Analysis ◽  
Screw Placement ◽  
Intraoperative Blood Loss ◽  
Pedicle Screw Placement ◽  
Drill Guide ◽  
3D Printed ◽  
Drill Guide Template

Abstract Background Many surgeons believe that the use of a 3D-printed drill guide template shortens operative time and reduces intraoperative blood loss compared with those of the free-hand technique. In this study, we investigated the effects of a drill guide template on the accuracy of pedicle screw placement (the screw placed completely in the pedicle), operative time, and intraoperative blood loss. Materials/Methods We systematically searched the major databases, such as Medline via PubMed, EMBASE, Ovid, Cochrane Library, and Google Scholar, regarding the accuracy of pedicle screw placement, operative time, and intraoperative blood loss. The χ2 test and I2 statistic were used to examine heterogeneity. Odds ratios (ORs) with 95% confidence intervals (CIs) were used to calculate the accuracy rate of pedicle screw placement, and weighted mean differences (WMDs) with 95% CIs were utilized to express operative time and intraoperative blood loss. Results This meta-analysis included 13 studies (seven randomized controlled trials and six prospective cohort studies) involving 446 patients and 3375 screws. The risk of research bias was considered moderate. Operative time (WMD = − 20.75, 95% CI − 33.20 ~ − 8.29, P = 0.001) and intraoperative blood loss (WMD = − 106.16, 95% CI − 185.35 ~ − 26.97, P = 0.009) in the thoracolumbar vertebrae, evaluated by a subgroup analysis, were significantly different between groups. The 3D-printed drill guide template has advantages over the free-hand technique and improves the accuracy of pedicle screw placement (OR = 2.88; 95% CI, 2.39~3.47; P = 0.000). Conclusion The 3D-printed drill guide template can improve the accuracy rate of pedicle screw placement, shorten operative time, and reduce intraoperative blood loss.

scholarly journals 3D Printed Templates Improve the Accuracy and Safety of Pedicle Screw Placement in the Treatment of Pediatric Congenital Scoliosis

2021 ◽  
Author(s):  
Jun Cao ◽  
Xuejun Zhang ◽  
Haonan Liu ◽  
Ziming Yao ◽  
Yunsong Bai ◽  
...  
Keyword(s):  
Cobb Angle ◽  
Pedicle Screw ◽  
Three Dimensional ◽  
Congenital Scoliosis ◽  
Screw Placement ◽  
Accuracy Rate ◽  
Kyphosis Angle ◽  
Pedicle Screw Placement ◽  
3D Printed ◽  
Main Curve

Abstract Background: Three-dimensional (3-D) printed guidance templates are being increasingly used in spine surgery. The purpose of this study was to determine if 3D printed navigation templates can improve the accuracy of pedicle screw placement and decrease the complication rate compared to freehand screw placement in the treatment of children with congenital scoliosis. Methods: The records of pediatric patients with congenital scoliosis treated at our hospital from January 2017 to January 2019 were retrospectively reviewed. Patients were divided into those where a 3D printed guidance templated was used and those in which the freehand method was used for pedicle screw placement. The accuracy rate of pedicle screw placement, surgical outcomes, and complications were compared between groups.Results: A total of 67 children with congenital scoliosis were included (43 males and 24 females; mean age of 4.13 ± 2.66 years; range, 2-15 years). There were 34 children in the template-assisted group and 33 in the freehand group. The excellent accuracy rate of pedicle screw placement was significantly higher in the template-assisted group (96.10% vs. 88.64%, P = 0.007). The main Cobb angle and kyphosis angle were similar between the 2 groups preoperatively and postoperatively (all, P > 0.05), and in both groups both angles were significantly decreased after surgery as compared to the preoperative values (all, P < 0.001). The degree of change of the Cobb angle of the main curve and kyphosis angle were not significantly different between the 2 groups. There were no postoperative complications in the template group and 4 in the freehand group (0% vs. 12.12%; P = 0.009). All 4 patients with complications required revision surgery.

The 3D Printed Template Assists Accuracy and Safety of Screw Placement in the Treatment of Pediatric Congenital Scoliosis: A Case Control Retrospective Study

2021 ◽  
Author(s):  
Jun Cao ◽  
Xuejun Zhang ◽  
Haonan Liu ◽  
Ziming Yao ◽  
Yunsong Bai ◽  
...  
Keyword(s):  
Postoperative Complications ◽  
Pedicle Screw ◽  
Three Dimensional ◽  
Congenital Scoliosis ◽  
Screw Placement ◽  
Accuracy Rate ◽  
Pedicle Screw Placement ◽  
3D Printed ◽  
Cobb’S Angle ◽  
Excellent Accuracy

Abstract Background: Three-dimensional (3-D) printed templates are increasingly applied in spinal surgery, but are rarely used in the treatment of congenital scoliosis. This study aimed to evaluate the accuracy and safety of 3D printed template-assisted screw placement in the treatment of congenital scoliosis.Methods: A total of 67 patients with congenital scoliosis treated in our hospital between January 2017 to January 2019 were retrospectively included (mean age= 4.13±2.66 years, range: 2-15) and divided into the template-assistant group (n=34) and the freehand group (n=33) according to the screw placement method. The accuracy rate of pedicle screw placement, surgical outcomes, and incidence of complications were compared between groups.Results: Although the good accuracy (grade 0+ grade 1) rate of pedicle screw placement was comparable between the two groups, the excellent accuracy (grade 0) rate was significantly higher in the template-assistant group than in the freehand group (96.10% vs. 88.64%, P=0.007). The main curve Cobb's angle and Kyphosis' angle significantly decreased after surgery in both groups but without a significant intergroup difference. The template-assistant group had a significantly lower postoperative complication rate than the freehand group (0% vs. 18.18%; P=0.009). The 4 patients with postoperative complications in the freehand group all received revision surgery.Conclusion: The 3D printed templates can improve the excellent accuracy rate of screw placement and reduce postoperative complications in the treatment of congenital scoliosis, thereby improving the therapeutic efficacy.

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