3D printing–assisted preoperative plan of pedicle screw placement for middle-upper thoracic trauma: a cohort study

Xu, Wei; Zhang, Xuming; Ke, Tie; Cai, Hongru; Gao, Xiang

doi:10.1186/s12891-017-1703-1

Cited by 17 publications

(14 citation statements)

References 28 publications

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“…Improved surgical precision, clearly defining resection margin even prior to the surgical incision and reduced operation time, are just a few of the potential advantages of using 3D anatomical modelling. In light of these, there have been preoperative productions of personalized models of airway (9), artery (10) and vertebral body (11) for surgical planning lately, making the technology of 3D printing a valuable asset across many surgical specialties ( Figure 1).…”

Section: Surgical Planningmentioning

confidence: 99%

“…Not only can surgical trainees and students appreciate distinct human anatomy, they might also gain hands-on experience on the respective procedure in simulation as discussed. In this sense, the model can also help diminish the learning curve of various operations before performing the procedure on real patients (11). Patients could also gain a better understanding of their own conditions, allowing improved decision making and communication, and ultimately better informed consent for the surgery.…”

Section: Educational Purposesmentioning

confidence: 99%

“…Xu et al, takes a step further, he added wings following the contour of the articular surface in order to create greater contact area between the implant and the vertebrae. By doing so, he is able to place additional screw on the lateral surface to further stabilize the implant and prevent dislodgement (11).…”

Section: Vertebral Body Reconstructionmentioning

confidence: 99%

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Multi-dimensional printing in thoracic surgery: current and future applications

Kwok¹,

Lau²,

Zhao³

et al. 2018

J. Thorac. Dis.

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Three-dimensional (3D) printing has been gaining much attention in the medical field in recent years. At present, 3D printing most commonly contributes in pre-operative surgical planning of complicated surgery. It is also utilized for producing personalized prosthesis, well demonstrated by the customized rib cage, vertebral body models and customized airway splints. With on-going research and development, it will likely play an increasingly important role across the surgical fields. This article reviews current application of 3D printing in thoracic surgery and also provides a brief overview on the extended and updated use of 3D printing in bioprinting and 4D printing.

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Section: Surgical Planningmentioning

confidence: 99%

Section: Educational Purposesmentioning

confidence: 99%

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Multi-dimensional printing in thoracic surgery: current and future applications

Kwok¹,

Lau²,

Zhao³

et al. 2018

J. Thorac. Dis.

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show abstract

“…3D printers help to increase surgical success by providing a preoperative simulation of surgical approaches (8,9). Models created with 3D compression are used in medical and surgical elds, such as cranial surgery, maxillofacial traumas, tissue engineering, chest deformities, and complex spine surgery (8,10).…”

Section: Introductionmentioning

confidence: 99%

The Place of 3D Printing Preoperative Planning in Upper Thoracic Fractures

Kaya

Cingöz

Şahin

et al. 2021

Preprint

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Background: This study aims to compare the clinical results of patients with upper thoracic vertebral fractures treated with pedicle screw and posterior spinal fusion with preoperative surgical planning and 3-dimensional (3D) modeling and patients treated with freehand screws.Methods: Thirty patients who underwent pedicle screw placement with a diagnosis of upper thoracic fracture between June 2018 and October 2020 were included in our study. Pedicle screws were used in 15 patients (group 1) after the planning was completed with the help of 3D preoperative printing and modeling. Pedicle screws were applied in 15 patients in the control group (group 2) using the freehand technique. Intraoperative bleeding amount, pedicle screw insertion time, and correct screw placement data in both groups were recorded. The time of insertion of each pedicle screw was recorded.Results: The operation time was 134 ± 22 minutes for group 1 and 152 ± 38 minutes for group 2. The difference in operation times was found to be statistically significant (p <0.05). Based on axial and sagittal reconstruction images, the accuracy rate of pedicle screw placement (grade 0 and 1) in group I was 96.5% compared to 84.2% in group II. Analyzing axial reconstruction images alone, the overall perforation rate was 10.3% in group I compared to 26.3% in group II. The minor perforation rate (Grade 1, <2 mm) was 7.0% in group I compared to 12.2% in group II. The moderate perforation rate (grade 2, 2-4 mm) was 3.4% in group I compared to 14% in group II. The severe perforation rate (grade 3, > 4 mm) was 1.7% in group II. The difference in overall accuracy rates between the two groups was significant (p<0.05).Conclusions: For 3D models of upper thoracic pedicle screw insertion, guide plates can be produced inexpensively and individually. It provides a new method for the accurate placement of upper thoracic pedicle screws with high accuracy and secure use in screw insertion.

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“…In addition, the three-dimensional (3D) printed models have been applied in the preoperative planning of pedicle screw placement for middle-upper thoracic trauma ( Xu et al, 2017 ). This technique may also aid in the performance of complex spinal operations, such as resection of primary cervical spinal tumors and thoracic tumors ( Xiao et al, 2016 ; Choy et al, 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Biomechanical Evaluation and the Assisted 3D Printed Model in the Patient-Specific Preoperative Planning for Thoracic Spinal Tuberculosis: A Finite Element Analysis

Wang

Hua

et al. 2020

Front. Bioeng. Biotechnol.

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Posterior fixation is superior to anterior fixation in the correction of kyphosis and maintenance of spinal stability for the treatment of thoracic spinal tuberculosis. However, the process of selecting the appropriate spinal fixation method remains controversial, and preoperative biomechanical evaluation has not yet been investigated. In this study, we aimed to analyze the application of the assisted finite element analysis (FEA) and the three-dimensional (3D) printed model for the patient-specific preoperative planning of thoracic spinal tuberculosis. An adult patient with thoracic spinal tuberculosis was included. A finite element model of the T7−T11 thoracic spine segments was reconstructed to analyze the biomechanical effect of four different operative constructs. The von Mises stress values of the implants in the vertical axial load and flexion and extension conditions under a 400-N vertical axial pre-load and a 10-N⋅m moment were calculated and compared. A 3D printed model was used to describe and elucidate the patient’s condition and simulate the optimal surgical design. According to the biomechanical evaluation, the patient-specific preoperative surgical design was prepared for implementation. The anterior column, which was reconstructed with titanium alloy mesh and a bone graft with posterior fixation using seven pedicle screws (M+P) and performed at the T7–T11 level, decreased the von Mises stress placed on the right rod, T7 pedicle screw, and T11 pedicle. Moreover, the M+P evaded the left T9 screw without load bearing. The 3D printed model and preoperative surgical simulation enhanced the understanding of the patient’s condition and facilitated patient-specific preoperative planning. Good clinical results, including no complication of implants, negligible loss of the Cobb angle, and good bone fusion, were achieved using the M+P surgical design. In conclusion, M+P was recommended as the optimal method for preoperative planning since it enabled the preservation of the normal vertebra and prevented unnecessary internal fixation. Our study indicated that FEA and the assisted 3D printed model are tools that could be extremely useful and effective in the patient-specific preoperative planning for thoracic spinal tuberculosis, which can facilitate preoperative surgical simulation and biomechanical evaluation, as well as improve the understanding of the patient’s condition.

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3D printing–assisted preoperative plan of pedicle screw placement for middle-upper thoracic trauma: a cohort study

Cited by 17 publications

References 28 publications

Multi-dimensional printing in thoracic surgery: current and future applications

Multi-dimensional printing in thoracic surgery: current and future applications

The Place of 3D Printing Preoperative Planning in Upper Thoracic Fractures

Biomechanical Evaluation and the Assisted 3D Printed Model in the Patient-Specific Preoperative Planning for Thoracic Spinal Tuberculosis: A Finite Element Analysis

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