We have located links that may give you full text access.
CONTROLLED CLINICAL TRIAL
JOURNAL ARTICLE
[CLINICAL APPLICATION OF INDIVIDUALIZED REFERENCE MODEL OF SAGITTAL CURVES AND NAVIGATION TEMPLATES OF PEDICLE SCREW BY THREE-DIMENSIONAL PRINTING TECHNIQUE FOR THORACOLUMBAR FRACTURE WITH DISLOCATION].
Chinese Journal of Reparative and Reconstructive Surgery 2015 November
OBJECTIVE: To evaluate the clinical significance of individualized reference model of sagittal curves and navigation templates of pedicle screw by three-dimensional printing technique for thoracolumbar fracture with dislocation.
METHODS: Between February 2011 and November 2013, 42 patients with thoracolumbar fracture and dislocation undergoing pedicle screw fixation were divided into 2 groups: traditional pedicle screw internal fixation by fluoroscopy assistant was used in 24 cases (control group), and individualized reference model of sagittal curves and navigation templates of pedicle screw were used in 18 cases (trial group). There was no significant difference in gender, age, injury causes, segment, degree of dislocation, and Frankel classification between 2 groups (P > 0.05). The operation time, intraoperative blood loss, perspective times, and dislocation rate, sagittal angle recovery rate at different time were compared. The success rate of pedicle screw insertion, sagittal screw angle, and Frankel classification were compared. The angle between sagittal screws, difference of screw entry point at horizontal position, and difference of screw inclined angle were compared.
RESULTS: The operating time, intraoperative blood loss, and perspective times in trial group were significantly lower than those in control groups (P < 0.05). All the patients were followed up 12-40 months (mean, 22 months). The dislocation rate at immediate after operation and last follow-up were significantly improved when compared with preoperative value in 2 groups (P < 0.05). At immediate after operation and last follow-up, the dislocation rate and sagittal angle recover rate in trial group were significantly better than those in control group (P < 0.05). There were significant differences in the one-time success rate, final success rate of pedicle screw insertion, and saggital screw angle between 2 groups (χ2 = 9.38, P = 0.00; χ2 = 10.95, P = 0.00; χ2 = 13.43, P = 0.00). The angle between sagittal screws, difference of screw entry point at horizontal position, and difference of screw inclined angle in trail group were significantly less than those in control group (P < 0.05). There was significant difference in the Frankel classification between 2 groups at last follow-up (Z = -1.99, P = 0.04).
CONCLUSION: The application of individualized reference model of sagittal curves and navigation templates of pedicle screw by three-dimensional printing technique for thoracolumbar fracture with dislocation has the advantages of shorter operation time, less intraoperative blood loss, better recovery of thoracolumbar dislocation, and better Frankel classification.
METHODS: Between February 2011 and November 2013, 42 patients with thoracolumbar fracture and dislocation undergoing pedicle screw fixation were divided into 2 groups: traditional pedicle screw internal fixation by fluoroscopy assistant was used in 24 cases (control group), and individualized reference model of sagittal curves and navigation templates of pedicle screw were used in 18 cases (trial group). There was no significant difference in gender, age, injury causes, segment, degree of dislocation, and Frankel classification between 2 groups (P > 0.05). The operation time, intraoperative blood loss, perspective times, and dislocation rate, sagittal angle recovery rate at different time were compared. The success rate of pedicle screw insertion, sagittal screw angle, and Frankel classification were compared. The angle between sagittal screws, difference of screw entry point at horizontal position, and difference of screw inclined angle were compared.
RESULTS: The operating time, intraoperative blood loss, and perspective times in trial group were significantly lower than those in control groups (P < 0.05). All the patients were followed up 12-40 months (mean, 22 months). The dislocation rate at immediate after operation and last follow-up were significantly improved when compared with preoperative value in 2 groups (P < 0.05). At immediate after operation and last follow-up, the dislocation rate and sagittal angle recover rate in trial group were significantly better than those in control group (P < 0.05). There were significant differences in the one-time success rate, final success rate of pedicle screw insertion, and saggital screw angle between 2 groups (χ2 = 9.38, P = 0.00; χ2 = 10.95, P = 0.00; χ2 = 13.43, P = 0.00). The angle between sagittal screws, difference of screw entry point at horizontal position, and difference of screw inclined angle in trail group were significantly less than those in control group (P < 0.05). There was significant difference in the Frankel classification between 2 groups at last follow-up (Z = -1.99, P = 0.04).
CONCLUSION: The application of individualized reference model of sagittal curves and navigation templates of pedicle screw by three-dimensional printing technique for thoracolumbar fracture with dislocation has the advantages of shorter operation time, less intraoperative blood loss, better recovery of thoracolumbar dislocation, and better Frankel classification.
Full text links
Related Resources
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app
All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.
By using this service, you agree to our terms of use and privacy policy.
Your Privacy Choices
You can now claim free CME credits for this literature searchClaim now
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app