Population-based design of mandibular plates based on bone quality and morphology

Habib Bousleiman, Christof Seiler, Tateyuki Iizuka, Lutz-Peter Nolte, Mauricio Reyes

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingAcademicpeer-review


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.

Original languageEnglish
Title of host publicationInternational Conference on Medical Image Computing and Computer-Assisted Intervention
Number of pages8
EditionPt 1
Publication statusPublished - 2012
Externally publishedYes

Publication series

SeriesMedical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention


  • Aged
  • Algorithms
  • Bone Plates
  • Bone and Bones/diagnostic imaging
  • Computer Simulation
  • Female
  • Fracture Fixation, Internal/methods
  • Humans
  • Internal Fixators
  • Male
  • Mandible/diagnostic imaging
  • Middle Aged
  • Models, Anatomic
  • Models, Statistical
  • Orthopedics/methods
  • Software
  • Tomography, X-Ray Computed/methods


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