Abstract
Purpose
The aim of our study was to demonstrate the value of three-dimensional (3D) reconstruction and three-dimensional printing (3DP) models in two cases of soft tissue sarcoma (STS) of the thigh.
Materials and methods
Two patients with STS were recruited and underwent enhanced CT and MRI scans. Then, the 3D models were reconstructed and printed using the obtained data, and five experts were invited to assess the segmentation quality. In addition, 34 junior, intermediate and senior general surgeons were recruited to demonstrate the value of 3D models in preoperative planning and invited five surgeons to complete the assessment of 3D models-assisted intraoperative navigation. Finally, 32 interns were enrolled to explore the significance of 3D models in medical education.
Results
All experts agree with the accuracy of the 3D models. The application of 3D models in preoperative planning improved the understanding of general surgeons (P = 0.000, P = 0.000, P = 0.000). After the planning tools were exchanged between the two groups, senior surgeons in group A showed more significant improvements in performance than junior and intermediate surgeons in group A (P = 0.001, P = 0.006). Surgeons unanimously agree on the value of 3D models in intraoperative navigation. When applied for the education of medical interns, these models could enhance their understanding of pathologic anatomies (P = 0.036).
Conclusion
In two operations for STS of the thigh with complex adjacencies, our study demonstrates that 3D models are of great value for preoperative planning, intraoperative navigation and medical education. More importantly, these models were more helpful to senior general surgeons.




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Acknowledgements
We would like to give our sincere thanks to Dr. Shujie Cheng, Dr. Wenshan Gao and Jinghua Li for conception of our study.
Funding
This work was supported by Fabrication of 3D Printing Full Color Transparent High Precision Surgical Planning Model, Transformation Key Project of Health Technology Research Achievements, Hebei Province, China(zh2018013). Government funded program of specialty capacity building and clinical medicine talents training (Hebei Province).
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LL mainly takes charge of writing and researching. KZ and Min Z participated in the design of our study. YL and RW performed the data analysis and interpretation. KZ reconstructed 3D digital models of soft tissue sarcoma. All authors read and approved the final manuscript.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of our Institutional Review Board and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
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Li, L., Zhang, K., Wang, R. et al. A study of three-dimensional reconstruction and printing models in two cases of soft tissue sarcoma of the thigh. Int J CARS 16, 1627–1636 (2021). https://doi.org/10.1007/s11548-021-02384-3
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DOI: https://doi.org/10.1007/s11548-021-02384-3