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A comprehensive classification of mandibular fractures : a preliminary agreement validation study

Buitrago-Téllez, C. H. and Audigé, L. and Strong, B. and Gawelin, P. and Hirsch, J. and Ehrenfeld, M. and Ruddermann, R. and Louis, P. and Lindqvist, C. and Kunz, C. and Cornelius, P. and Shumrick, K. and Kellman, R. M. and Sugar, A. and Alpert, B. and Prein, J. and Frodel, J.. (2008) A comprehensive classification of mandibular fractures : a preliminary agreement validation study. International journal of oral and maxillofacial surgery, Vol. 37, H. 12. pp. 1080-1088.

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Official URL: http://edoc.unibas.ch/dok/A6004894

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Abstract

This study evaluates a comprehensive classification system for mandibular fractures based on imaging analysis. The AO/ASIF scheme, defining three fracture types (A, B, C), three groups within each type (e.g. A1, A2, A3) and three subgroups within each group (e.g. A1.1, A1.2, A1.3) with increasing severity from A1.1 (lowest) to C3.3 (highest) was used. The mandible is divided into two vertical units (I and V), two lateral horizontal units (II and IV) and one central unit (III) comprising the symphyseal and parasymphyseal region. Type A fractures are non-displaced, type B are displaced and type C are multifragmentary/defect injuries. Groups and subgroups are further defined in the classification system. Two classification sessions using semi-automatic software with 7 and 9 surgeons were performed to evaluate 100 fracture cases in the first session and 50 in the second. Inter-observer reliability and individual rater's accuracy were evaluated by kappa coefficient and latent class analysis, respectively. The analysis of inter-observer agreement for the detailed coding showed kappa coefficients around 0.50 with higher agreement among raters in the vertical units. This system allows standardization of documentation of mandibular fractures, although improvement in the definition of categories and their application is required.
Faculties and Departments:03 Faculty of Medicine > Bereich Operative Fächer (Klinik) > Kopfbereich > Kiefer- und Gesichtschirurgie (Zeilhofer)
03 Faculty of Medicine > Departement Klinische Forschung > Bereich Operative Fächer (Klinik) > Kopfbereich > Kiefer- und Gesichtschirurgie (Zeilhofer)
UniBasel Contributors:Kunz, Christoph N.
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Churchill Livingstone
ISSN:0901-5027
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:25 Apr 2014 08:01
Deposited On:25 Apr 2014 08:01

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