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Ann Anat. 2021 Dec 02;240:151878. doi: 10.1016/j.aanat.2021.151878. Epub 2021 Dec 02.

"Crack under pressure"-Inducing life-like mandible fractures as a potential benefit to surgical education in oral and maxillofacial surgery.

Annals of anatomy = Anatomischer Anzeiger : official organ of the Anatomische Gesellschaft

Andreas Harbrecht, Fabian Endlich, Michael Hackl, Korbinian Seyboth, Bernd Lethaus, Lars P Müller, Kilian Wegmann

Affiliations

  1. University of Cologne, Faculty of Medicine and University Hospital, Center for Orthopedic and Trauma Surgery, Kerpener Str. 62, 50937 Cologne, Germany; Department of Anatomy I, University of Cologne, Faculty of Medicine and University Hospital, Cologne, Germany.
  2. University of Cologne, Faculty of Medicine and University Hospital, Center for Orthopedic and Trauma Surgery, Kerpener Str. 62, 50937 Cologne, Germany.
  3. Praxis MKG Augsburg Süd, Inninger Str. 2, 86179 Augsburg, Germany.
  4. Department of Oral and Maxillofacial Surgery, Leipzig University, Liebigstraße 12, 04103 Leipzig, Germany. Electronic address: [email protected].

PMID: 34863911 DOI: 10.1016/j.aanat.2021.151878

Abstract

The aim of this study was to investigate whether life-like fractures of human cadaveric mandibles with a focus on the condylar process and the intact soft tissue envelope could be simulated. A total of nine fresh-frozen human head specimens were fractured in a custom-made drop-test bench. This reproducible method is based on a weight falling from a defined height onto the fixed specimens, simulating a direct blow to the symphysis of the mandible. All the fractures were analyzed by fluoroscopy and CT-scans. In all the specimens that were included in this study, several typical lesions could be created, resulting in a total of 27 mandible fractures. Seven condylar head fractures with intracapsular fracture patterns, three high, two low and five subcondylar fractures as well as different corpus fractures occurred. Human cadaveric mandibles as part of a complete head specimen with intact soft tissue can be successfully fractured by means of a drop-test bench setup. The amount of load and the exact angle at which the load is applied seem to be of high relevance. Such fractured specimens can be implemented in surgical education courses to teach and improve osteosynthetic techniques.

Copyright © 2021 Elsevier GmbH. All rights reserved.

Keywords: Condylar process fractures; Fracture simulation; Mandibular; Realistic fracture patterns; Surgical education

Conflict of interest statement

Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this pa

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