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

Bousleiman, Habib; Seiler, Christof; Iizuka, Tateyuki; Nolte, Lutz-Peter; Reyes, Mauricio (2012). Population-Based Design of Mandibular Plates Based on Bone Quality and Morphology. In: Ayache, Nicholas; Delingette, Hervé; Golland, Pollina; Mori, Kensaku (eds.) Medical Image Computing and Computer-Assisted Intervention – MICCAI 2012. Lecture notes in computer sciences: Vol. 15 (pp. 66-73). Berlin Heidelberg: Springer 10.1007/978-3-642-33415-3_9

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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° and a screw separation of 8mm is a more suitable design than the standard 120° and 9mm.

Item Type:

Conference or Workshop Item (Paper)

Division/Institute:

04 Faculty of Medicine > Pre-clinic Human Medicine > Institute for Surgical Technology & Biomechanics ISTB [discontinued]
04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Craniomaxillofacial Surgery

UniBE Contributor:

Bou Sleiman, Habib; Iizuka, Tateyuki; Nolte, Lutz-Peter and Reyes, Mauricio

Subjects:

500 Science > 570 Life sciences; biology
600 Technology > 610 Medicine & health

ISSN:

0302-9743

ISBN:

978-3-642-33415-3

Series:

Lecture notes in computer sciences

Publisher:

Springer

Language:

English

Submitter:

Mauricio Antonio Reyes Aguirre

Date Deposited:

04 Oct 2013 14:30

Last Modified:

08 Jun 2016 10:29

Publisher DOI:

10.1007/978-3-642-33415-3_9

PubMed ID:

23285536

BORIS DOI:

10.7892/boris.11483

URI:

https://boris.unibe.ch/id/eprint/11483 (FactScience: 217676)

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