Potentialities and limitations of a database constructing three-dimensional virtual bone models
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ORIGINAL ARTICLE
Potentialities and limitations of a database constructing three-dimensional virtual bone models F. Radetzki • T. Mendel • H. Noser • D. Stoevesandt • M. Ro¨llinghoff • N. Gutteck K. S. Delank • D. Wohlrab
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Received: 3 October 2012 / Accepted: 2 April 2013 Ó Springer-Verlag France 2013
Abstract Background 3D bone reconstructions performed during general clinical practice are of limited use for preclinical research, education, and training purposes. For this reason, we are constructing a database of human 3D virtual bone models compiled from computer tomography (CT) scans. Materials and methods CT data sets were post-processed using AmiraÒ 5.2 software. In each cut, bone structures were isolated using semiautomatic labeling program codes. The software then generated extremely precise 3D bone models in STL format (standard triangulated language). These bone models offer a sustainable source of information for morphologic studies and investigations of biomechanical bony characteristics in complex anatomic regions. F. Radetzki (&) M. Ro¨llinghoff N. Gutteck K. S. Delank D. Wohlrab Department of Orthopedic Surgery, Martin Luther University Halle-Wittenberg, Magdeburger Straße 22, 06112 Halle (Saale), Germany e-mail: [email protected] T. Mendel Department of Trauma Surgery, Employers’ Liability Insurance Association Hospital Bergmannstrost, Merseburger Straße 165, 06112 Halle (Saale), Germany T. Mendel Department of Trauma Surgery, Friedrich Schiller University Jena, Erlanger Allee 101, 07747 Jena, Germany H. Noser AO Research Institute, Clavadelerstrasse 8, 7270 Davos Platz, Switzerland D. Stoevesandt Clinic for Diagnostic Radiology, Martin Luther University Halle-Wittenberg, Ernst-Grube-Straße 40, Halle (Saale), Germany
Regarding educational value and student acceptance models were introduced during bedside teaching and evaluated by medical students. Results The current database is comprised of 131 pelvises and 120 femurs (ø 60 years, ø 172 cm, ø 76 kg), and is continuously growing. To date, 3D morphometric analyses of the posterior ring and the acetabulum have been successfully completed. Eighty students (96 %) evaluated instruction with virtual 3D bone models as ‘‘good’’ or ‘‘very good‘‘. The majority of students want to increase learning with virtual bone models covering various regions and diseases. Conclusion With consistent and steadily increasing case numbers, the database offers a sustainable alternative to human cadaver work for practical investigations. In addition, it offers a platform for education and training. Keywords Bone models Database Education Three-dimensional (3D) Virtual analysis
Background Since the introduction of sectional imaging procedures like computer tomography (CT) and magnetic resonance imaging (MRI), it has been possible to carry out detailed examinations and analyses of skeletal cross-sections. However, spatial conception and three-dimensional (3D) orientation must be performed internally by the observer. Recognition and internal coordinati
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