Comparing the Treatment of Congenital Spine Deformity Using Freehand Techniques In Vivo and 3D-Printed Templates In Vitro (Prospective–Retrospective Single-Center Analytical Single-Cohort Study)
Introduction
Hemivertebrae excision with local posterior instrumentation is the most common technique for treatment of patients with congenital spine deformity—it is performed at a very young age. We conducted a comparative analysis for accuracy of pedicle screw positioning in infants with congenital scoliosis of the thoracolumbar area inserted using freehand technique in vivo and 3D-printed guiding templates in vitro.
Objective. To prove the effectiveness of 3D computer modeling and printing of patient-specific templates for cervical spine screw fixation. Materials and Methods . Based on the MSCT data of three patients, 3D models of cervical vertebrae and guiding templates were produced. The screws were inserted transpedicularly into 3D-printed models of C 2 –C 7 vertebrae and C 1 lateral masses using standard cervical instrumentation. This technology was then clinically tested in a patient with C 2 tumor, in...
#1Yue Pan(CSU: Central South University)H-Index: 1
#2Guohua Lü(CSU: Central South University)H-Index: 12
Last. Bing Wang(CSU: Central South University)H-Index: 17
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Purpose Patients with severe spinal deformities often have small pedicle diameters, and pedicle dimensions vary between segments and individuals. Free-hand pedicle screw placement can be inaccurate. Individualized drill guide templates may be used, but the accuracy of pedicle screw placement in severe scoliosis remains unknown. The accuracy of drill guide templates and free-hand technique for the treatment of adolescent patients with severe idiopathic scoliosis are compared in this study.
Objective. To perform comparative analysis of the accuracy of pedicle screw placement in spinal deformity correction in children with idiopathic scoliosis using 3D-CT navigation. Material and Methods . Surgical treatment of 96 patients aged 14–18 years with Lenke type I and V idiopathic scoliosis was performed. In the study group (n = 66), pedicle screws were inserted using the navigation station, in the control group (n = 30) – by the freehand method. The accuracy of pedicle screw position was ...
#1Zhenxuan Shao(WMU: Wenzhou Medical College)H-Index: 6
#2Jian-Shun Wang(WMU: Wenzhou Medical College)H-Index: 4
Last. Ai-Min Wu(WMU: Wenzhou Medical College)H-Index: 22
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: Transpedicular transdiscal screw fixation is an alternative technique used in lumbar spine fixation; however, it requires an accurate screw trajectory. The aim of this study is to design a novel 3D-printed custom drill guide and investigate its accuracy to guide the trajectory of transpedicular transdiscal (TPTD) lumbar screw fixation. Dicom images of thirty lumbar functional segment units (FSU, two segments) of L1-L4 were acquired from the PACS system in our hospital (patients who underwent a...
#1Xing Wang(Inner Mongolia Medical University)H-Index: 2
#2Shi Jun(Inner Mongolia Medical University)H-Index: 2
Last. Zhijun Li(Inner Mongolia Medical University)H-Index: 2
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Background: Pedicle screw technique is commonly used treatment of adult spinal trauma, tumor, degeneration. The application of pedicle screws is very challenging in children because children have a fast growing spine and spinal pedicle morphology of children and adult has large difference. 3 D reconstruction individual navigation templates improve the success rate of pediatric pedicle screw system. This study is aimed to provide a precise method for lumbar spine pedicle screw placement in childr...
#2Qiang Zhang(Capital Medical University)H-Index: 6
Last. Yansheng Li(Beijing University of Technology)H-Index: 1
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Purpose Accurate implantation of pedicle screw in spinal deformity correction surgeries is always challenging. We have developed a method of pedicle screw placement in severe and rigid scoliosis with a multi-level 3D printing drill guide template.
The paper presents a review of 28 domestic and foreign publications with the level of evidence of not less than 2 reporting the treatment results in children with congenital monosegmental anomalies of the spine over the past 15 years. A total of 657 clinical cases were analyzed, including 593 literature cases and 64 cases from authors’ experience. Results of hemivertebra treatment in children using combined approach, extended posterior approach and local posterior approach with transpedicular ex...
Last. Xiangsheng Tang(China-Japan Friendship Hospital)H-Index: 6
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: BACKGROUND Atlantoaxial posterior pedicle screw fixation has been widely used for treatment of atlantoaxial instability (AAI). However, precise and safe insertion of atlantoaxial pedicle screws remains challenging. This study presents a modified drill guide template based on a previous template for atlantoaxial pedicle screw placement. MATERIAL AND METHODS Our study included 54 patients (34 males and 20 females) with AAI. All the patients underwent posterior atlantoaxial pedicle screw fixation...
Prospective clinical trial of the screw insertion method for posterior C1-C2 fixation utilizing the patient-specific screw guide template technique.To evaluate the efficacy of this method for insertion of C1 lateral mass screws (LMS), C2 pedicle screws (PS), and C2 laminar screws (LS).Posterior C1LMS and C2PS fixation, also known as the Goel-Harms method, can achieve immediate rigid fixation and high fusion rate, but the screw insertion carries the risk of injury to neuronal and vascular structu...
#1Mazda Farshad(UZH: University of Zurich)H-Index: 24
#2Michael Betz(UZH: University of Zurich)H-Index: 18
Last. Manuel Moser(UZH: University of Zurich)H-Index: 2
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Purpose Dorsal spinal instrumentation with pedicle screw constructs is considered the gold standard for numerous spinal pathologies. Screw misplacement is biomechanically disadvantageous and may create severe complications. The aim of this study was to assess the accuracy of patient-specific template-guided pedicle screw placement in the thoracic and lumbar spine compared to the free-hand technique with fluoroscopy.
Last. Jianzhong Xu(Third Military Medical University)H-Index: 50
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Abstract OBJECTIVE This study aimed to explore the clinical application of 3D printing technology in the surgical treatment of CS due to HV. METHOD Twenty-four patients (11 in the 3D-printing group and 13 in the conventional group) with scoliosis secondary to a single HV were retrospectively reviewed. All of the cases underwent hemivertebrectomy and short-segment fixation. Virtual preoperative planning, operation simulation, and intraoperative application of 3D-printed patient-specific templates...
Last. Peng Yin(Capital Medical University)H-Index: 10
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PURPOSE This study aimed to compare the pedicle screw placement accuracy and surgical outcomes between 3D-printed (3DP) drill guide template technique and freehand technique in spinal deformity surgery. METHODS A comprehensive systematic literature search of databases (PubMed, Embase, Cochrane Library, and Web of Science) was conducted. The meta-analysis compared the pedicle screw placement accuracy and other important surgical outcomes between the two techniques. RESULTS A total of seven studie...
