Facial fractures are classified according to a system developed by Rene Le Fort in the early 1900s.A fracture that starts at the nasal bones; crosses the frontal process of the maxilla and lacrimal bones; and extends through the orbital floor,infraorbital rim,and lateral maxillary sinus wall is known as a:

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Le Fort I,or transverse maxillary,fracture is a horizontal fracture that includes the nasal floor,septum,and teeth.Le Fort II,or pyramidal maxillary,fracture (unilateral or bilateral)often involves the nasal cavity,hard palate,and the orbital rim.Le Fort III,or craniofacial dysjunction,fracture includes fractures of both zygomas and the nose.Like a mandibular fracture,a maxillary fracture also produces malocclusion.In addition,depending on the severity of the fracture,it may produce considerable deformity of the middle of the face,usually perceived as a flattening or smashed-in appearance.Closed reduction with intermaxillary fixation suffices for treatment of Le Fort I and some Le Fort II fractures.

Facial Fractures Are Classified According to a System Developed by Rene