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Introduction: Recently, the use of thoracoscopic methods in spinal deformity surgery has increased, however, the issue of the effectiveness of combining anterior release with posterior spinal fusion compared to single-stage posterior instrumentation remains controversial, which raises the issue of the effectiveness and feasibility of their use., Purpose: To evaluate the effectiveness of endoscopic anterior release for thoracic scoliosis in children., Material and Method: A retrospective analysis of the results of surgical treatment of 48 patients with idiopathic scoliosis of the thoracic spine aged 12-17 years, with a thoracic curve of more than 60°, was carried out. To determine the stability of deformity, the stability index according to A.I. Kazmin was used. (SI) defined as the ratio of the angle of deformity in the supine position to the angle of deformity in the standing position. Indications for anterior release were incomplete skeletal growth and relatively stable deformities (SI 0.75-0.85). Group 1 included 27 patients operated on in one stage without anterior release, and group 2 included 21 patients in two stages, with preliminary anterior release using video-assisted thoracoscopy., Results: In group 1, the average Cobb angle of deformity was 71.8° with an average stability index of 0.8. In the second group, the average cobb angle of deformity was 69.7°, the average stability index was 0.82. In group 1 after surgery, the average Cobb angle was 27.8°, with an average correction of 63.39%. In the second group, the postoperative deformity angle was 17.4°, the average correction was 76.26%. Thus, we found a statistically significant increase in postoperative correction when using a combined anterior/posterior approach (p < 0.05)., Conclusion: In the study, in patients with relatively stable deformities, a statistically significant increase in the degree of postoperative correction was revealed (p < 0.05) when using a combined anterior/posterior approach. Performing an anterior thoracoscopic release for thoracic deformities can improve long-term results due to the formation of 360° spinal fusion at the apex of the deformity, as well as turning off the pathogenetic links in the progression of the deformity., Level of Evidence: III., Competing Interests: Conflicts of interest The authors have none to declare., (Copyright © 2024 Elsevier Inc. All rights reserved.)

Objectives: The objective of this work was to develop technology to create 'soft' patient-specific models of semilunar heart valves, the aortic valve in particular, suitable for training and simulation of surgical and endovascular interventions., Methods: Data obtained during routine cardiac contrast-enhanced multislice computed tomography were used to create 3-dimensional models of the aortic root. Three-dimensional models were used to create soft silicone models of the aortic root made by casting silicone into a negative mould printed with stereolithography. A comparison between the constructed models and the size of the aortic root was performed. We quantified how much time was needed for production of each model., Results: Four patient-specific soft models of the aortic root were produced. Data from patients of different ages and body surface areas were used as prototypes. All models had minimum size errors. During development of this technology, production time per model was reduced from 63 to 39 h., Conclusions: We have demonstrated the feasibility of making soft patient-specific 3-dimensional aortic root models using currently available technology. These models can be used both for training physicians in a variety of open surgical and endovascular interventions and for the study of complex aortic root geometry., (© The Author(s) 2020. Published by Oxford University Press on behalf of the European Association for Cardio-Thoracic Surgery. All rights reserved.)