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- Title
3D printing-assisted preoperative plan of pedicle screw placement for middle-upper thoracic trauma: a cohort study.
- Authors
Wei Xu; Xuming Zhang; Tie Ke; Hongru Cai; Xiang Gao; Xu, Wei; Zhang, Xuming; Ke, Tie; Cai, Hongru; Gao, Xiang
- Abstract
<bold>Background: </bold>This study aimed to evaluate the application of 3D printing in assisting preoperative plan of pedicle screw placement for treating middle-upper thoracic trauma.<bold>Methods: </bold>A preoperative plan was implemented in seven patients suffering from middle-upper thoracic (T3-T7) trauma between March 2013 and February 2016. In the 3D printing models, entry points of 56 pedicle screws (Magerl method) and 4 important parameters of the pedicle screws were measured, including optimal diameter (ϕ, mm), length (L, mm), inclined angle (α), head-tilting angle (+β), and tail-tilting angle (-β). In the surgery, bare-hands fixation of pedicle screws was performed using 3D printing models and the measured parameters as guidance.<bold>Results: </bold>A total of seven patients were enrolled, including five men and two women, with the age of 21-62 years (mean age of 37.7 years). The position of the pedicle screw was evaluated postoperatively using a computerized tomography scan. Totally, 56 pedicle screws were placed, including 33 pieces of level 0, 18 pieces of level 1, 4 pieces of level 2 (pierced lateral wall), and 1 piece of level 3 (pierced lateral wall, no adverse consequences), with a fine rate of 91.0%.<bold>Conclusions: </bold>3D printing technique is an intuitive and effective assistive technology to pedicle screw fixation for treating middle-upper thoracic vertebrae, which improve the accuracy of bare-hands screw placement and reduce empirical errors.<bold>Trial Registration: </bold>The trial was approved by the Ethics Committee of the Fujian Provincial Hospital. It was registered on March 1st, 2013, and the registration number was K2013-03-001.
- Subjects
THREE-dimensional printing; COMPUTED tomography; THORACIC vertebrae; PEDICLE flaps (Surgery); COMPUTER-assisted image analysis (Medicine); THORACIC vertebrae injuries; BONE screws; BONE fractures; LONGITUDINAL method; PREOPERATIVE care; SPINAL injuries; COMPRESSION fractures; COMPUTER-assisted surgery; EQUIPMENT &; supplies; SURGERY
- Publication
BMC Musculoskeletal Disorders, 2017, Vol 18, p1
- ISSN
1471-2474
- Publication type
journal article
- DOI
10.1186/s12891-017-1703-1