title: Biomechanical investigation of naso-orbitoethmoid trauma by finite element analysis.
abstract: Naso-orbitoethmoid fractures account for 5% of all facial fractures. We used data derived from a white 34-year-old man to make a transient dynamic finite element model, which consisted of about 740 000 elements, to simulate fist-like impacts to this anatomically complex area. Finite element analysis showed a pattern of von Mises stresses beyond the yield criterion of bone that corresponded with fractures commonly seen clinically. Finite element models can be used to simulate injuries to the human skull, and provide information about the pathogenesis of different types of fracture.
authors.affiliation: Department of Oral and Maxillofacial Plastic Surgery, Leipzig University, Liebigstrasse 12, 04103 Leipzig, Germany. Electronic address: heike.huempfner-hierl@medizin.uni-leipzig.de.
authors.forename: Heike
authors.initials: H
authors.lastname: Huempfner-Hierl
authors.affiliation: Department of Oral and Maxillofacial Plastic Surgery, Leipzig University, Liebigstrasse 12, 04103 Leipzig, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Schaller
authors.affiliation: Department of Oral and Maxillofacial Plastic Surgery, Leipzig University, Liebigstrasse 12, 04103 Leipzig, Germany.
authors.forename: Alexander
authors.initials: A
authors.lastname: Hemprich
authors.affiliation: Department of Oral and Maxillofacial Plastic Surgery, Leipzig University, Liebigstrasse 12, 04103 Leipzig, Germany.
authors.forename: Thomas
authors.initials: T
authors.lastname: Hierl
mesh_terms: D000328:Adult; D001696:Biomechanical Phenomena; D015519:Bone Density / Q000502:physiology; D003198:Computer Simulation; D055119:Elastic Modulus; D005005:Ethmoid Sinus / Q000293:injuries*; D020342:Finite Element Analysis; D006801:Humans; D008297:Male; D008954:Models, Biological; D009295:Nasal Bone / Q000293:injuries*; D009917:Orbital Fractures / Q000503:physiopathology*; D012887:Skull Fractures / Q000503:physiopathology*; D013314:Stress, Mechanical; D014057:Tomography, X-Ray Computed / Q000379:methods; D014584:User-Computer Interface; D014754:Violence
keywords: biomechanics; facial trauma; finite element analysis; naso-orbitoethmoid trauma