NDLI: Population-Based Design of Mandibular Fixation Plates with Bone Quality and Morphology Considerations

Content Provider	Springer Nature Link
Author	Bousleiman, Habib Iizuka, Tateyuki lte, Lutz Peter Reyes, Mauricio
Copyright Year	2012
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 may enhance the mechanical stability of the fixation and reduces the intra-operative in-plane bending which might impede the functionality of the locking mechanism. The computational 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. The method automatically derives the mandibular angle and the bone thickness and intensity values at the path of every screw from a set of computed tomography images. An optimization strategy is then used to optimize the two parameters of plate angle and screw position. The method was applied to two populations of different genders. Results for the new design are presented along with a comparison with a commercially available mandibular locking fixation plate (MODUS® TriLock® 2.0/2.3/2.5, Medartis AG, Basel, Switzerland). The proposed designs resulted in a statistically significant improvement in the available bone thickness when compared to the standard plate. There is a higher probability that the proposed implants cover areas of thicker cortical bone without compromising the bone mineral density around the screws. The obtained results allowed us to conclude that an angle and screw separation of 129° and 9 mm for females and 121° and 10 mm for males are more suitable designs than the commercially available 120° and 9 mm.
Starting Page	377
Ending Page	384
Page Count	8
File Format	PDF
ISSN	00906964
Journal	Annals of Biomedical Engineering
Volume Number	41
Issue Number	2
e-ISSN	15739686
Language	English
Publisher	Springer US
Publisher Date	2012-10-10
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Orthopedic implant design Population-based analysis Computational anatomy Mandibular locking fixation plate Biomedicine general Biomedical Engineering Biophysics and Biological Physics Mechanics Biochemistry
Content Type	Text
Resource Type	Article
Subject	Biomedical Engineering

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