Population-Based Design of Mandibular Plates Based on Bone Quality and Morphology

H. Bou-Sleiman 1 Christof Seiler 1, 2 T. Iizuka 3 L. Nolte 1 Mauricio Reyes 1
1 ISTB - Institute for Surgical Technology and Biomechanics [Bern]
2 ASCLEPIOS - Analysis and Simulation of Biomedical Images
CRISAM - Inria Sophia Antipolis - Méditerranée
3 Department of Cranio-Maxillofacial Surgery [Bern]
Abstract : In this paper we present a new population-based implant design methodology, which advances the state-of-the-art approaches by combining shape and bone quality information into the design strategy. The method enhances the mechanical stability of the fixation and reduces the intra-operative in-plane bending which might impede the functionality of the locking mechanism. The method is presented for the case of mandibular locking fixation plates, where the mandibular angle and the bone quality at screw locations are taken into account. Using computational anatomy techniques, the method automatically derives, from a set of computed tomography images, the mandibular angle and the bone thickness and intensity values at the path of every screw. An optimisation strategy is then used to optimise the two parameters of plate angle and screw position. Results for the new design are presented along with a comparison with a commercially available mandibular locking fixation plate. A statistically highly significant improvement was observed. Our experiments allowed us to conclude that an angle of 126 degrees and a screw separation of 8 mm is a more suitable design than the standard 120 degrees and 9 mm.
Type de document :
Communication dans un congrès
Nicholas Ayache and Hervé Delingette and Polina Golland and Kensaku Mori. Proceedings of Medical Image Computing and Computer Assisted Intervention 2012 (MICCAI), 2012, Nice, France. Springer, Heidelberg, 7510, pp.66--73, 2012, LNCS. 〈10.1007/978-3-642-33415-3_9〉
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https://hal.inria.fr/hal-00813819
Contributeur : Project-Team Asclepios <>
Soumis le : mardi 16 avril 2013 - 11:16:02
Dernière modification le : jeudi 11 janvier 2018 - 16:30:51

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H. Bou-Sleiman, Christof Seiler, T. Iizuka, L. Nolte, Mauricio Reyes. Population-Based Design of Mandibular Plates Based on Bone Quality and Morphology. Nicholas Ayache and Hervé Delingette and Polina Golland and Kensaku Mori. Proceedings of Medical Image Computing and Computer Assisted Intervention 2012 (MICCAI), 2012, Nice, France. Springer, Heidelberg, 7510, pp.66--73, 2012, LNCS. 〈10.1007/978-3-642-33415-3_9〉. 〈hal-00813819〉

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