Three-dimensional printing-assisted selective segmental pedjcle screws for adolescent idiopathic scoliosis
Zhang Shu-fang
Chen Rong-chun
Guo Chao-yang
Ye Shu-xi
Zhong Hong-fa
You Hui
Abstract：BACKGROUND:Three-dimensional (3D) printing has been popular for preoperative planning, and has been extensively used in bone tumor resection and pelvic fractures achieving satisfactory treatment <br> outcomes. However, seldom used in adolescent idiopathic scoliosis. <br> OBJECTIVE:To evaluate the clinical effect of 3D printing-assisted selective segmental pedicle screws for adolescent idiopathic scoliosis. <br> METHODS:Seventy adolescent patients with idiopathic scoliosis from June 2014 to June 2015 were enrol ed for retrospective analysis. Thin-layer computed tomography scan data of the patients were input into Mimics software in DICOM format for 3D editing and virtual surgery before surgery. The scoliosis model was created by 3D printing. Simulated operation was performed to design the optimum location of the plate screw, screw length measurement and screwing approach, and then real selective segmental pedicle screws were conducted. <br> RESULTS AND CONCLUSION:Cobb angle of major thoracic curve in standing comnal plane and the distance of apical vertebra shift after operation were significantly improved compared with pre-operation (P<0.05), without nerve, blood vessel or visceral injuries. The placement site, direction and length of pedicle screws were consistent with those in 3D printing model. These results suggest that 3D printing-assisted selective segmental pedicle screws can obtain accurate, safe and perfect outcomes in the treatment of adolescent idiopathic scoliosis through improving the correction rate and shortening the operation time. Subject headings:Scoliosis;Computer-Aided Design;Tissue Engineering
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Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 7225-7231 )