Abstract
The paper presents a case where an implant for a part of the sternum (with costal cartilages) affected by cancer was created and implanted by using the specific reverse modeling method and solid free-form fabrication. The method provides surgeons with a fast and reliable tool for tissue engineering and implantation and therefore improves the quality of life for patients. Digital images of healthy sternum samples were used to develop a reverse modeling algorithm that semi-automatically generates a necessary and sufficient simplification of the tissue geometry to be fabricated in an inexpensive and applicable manner. In this particular case, the redesign of the missing part of the sternum in CAD software took three designer-hours. At the same time, the suitable simplification of the geometry affects the fabrication of simpler and less expensive casting molds. Furthermore, the core of the developed algorithm for the reverse modeling of sternum can be applied in the reverse modeling improvement of other tile (or plate-like) bones.
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Notes
This polygonal model is CAD software native and is not the same one that is obtained through medical image processing and recorded in STL format.
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Acknowledgments
The paper presents a case that is a result of the application of multidisciplinary research from the domain of bioengineering in real medical practice. The research project (Application of Computer Aided Technologies in the Surgery of Human Skeleton System) is sponsored by the Ministry of Science and Technology of the Republic of Serbia—project id TR12012 for the period of 2008–2010.
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Stojkovic, M., Milovanovic, J., Vitkovic, N. et al. Reverse modeling and solid free-form fabrication of sternum implant. Australas Phys Eng Sci Med 33, 243–250 (2010). https://doi.org/10.1007/s13246-010-0029-1
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DOI: https://doi.org/10.1007/s13246-010-0029-1