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Neff, A.; Cornelius, C.-P.; Rasse, M.; Audigé, L. (2017): Kiefergelenkfortsatzfrakturen nach der AO-CMF-Trauma-Klassifikation. In: Mkg-Chirurg, Vol. 10, No. 2: pp. 113-126
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The condylar process is comprised of three predominant fracture zones and is consequently divided into the subregions condylar head, neck and base within precision level 3 of the AO-CMF trauma classification. Fractures of the condylar head show two typical fracture courses: medially to the pole zone (type m) which usually do not compromise the lateral condyle in relation to disc and fossa and within the lateral pole zone (type p), which is associated with a loss of vertical height and anterior-medial disc displacement, either coincidental with a disruption of the lateral capsule attachment or not. The fracture morphology is further characterized by the presence of minor or major fragmentation, vertical fragment apposition and displacement and distortion of the small condylar head fragment with respect to the fossa. Fractures of the condylar neck and condylar base are differentiated according to a newly introduced one third to two thirds rule with respect to the proportion of the fracture line above and below the level of the so-called Loukota-line ("sigmoid notch line"). Attributes for the definition of the fracture morphology are the presence and respective direction of displacement or dislocation, the angulation of the condyle-bearing fragment and parameters, such as fragmentation, loss of vertical ramus height and displacement of the condyle-fossa relationship.