Three-dimensional printing-assisted selective segmental pedjcle screws for adolescent idiopathic scoliosis

doi:10.3969/j.issn.2095-4344.2016.48.012

Abstract

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 outcomes. However, seldom used in adolescent idiopathic scoliosis.

OBJECTIVE: To evaluate the clinical effect of 3D printing-assisted selective segmental pedicle screws for adolescent idiopathic scoliosis.

METHODS: Seventy adolescent patients with idiopathic scoliosis from June 2014 to June 2015 were enrolled 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.

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.

中国组织工程研究杂志出版内容重点：人工关节；骨植入物；脊柱；骨折；内固定；数字化骨科；组织工程

Key words: Scoliosis, Computer-Aided Design, Tissue Engineering

CLC Number:

R318

Zhang Shu-fang, Chen Rong-chun, Guo Chao-yang, Ye Shu-xi, Zhong Hong-fa, You Hui. Three-dimensional printing-assisted selective segmental pedjcle screws for adolescent idiopathic scoliosis[J]. Chinese Journal of Tissue Engineering Research, 2016, 20(48): 7225-7231.

Figures/Tables 3

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