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Fig. 5A. —Le Fort I fracture. To classify this Le Fort fracture, look at the following four facial segments: pterygoid processes (fractured in this case: Le Fort fracture is most likely present), anterolateral margins of nasal fossa above maxillary alveolar ridge (fractured: Le Fort I is likely present), inferior orbital rims (intact: Le Fort II is excluded), and zygomatic arches (intact: Le Fort III is excluded). Le Fort I fracture is confirmed by noting other expected fractures in plane of Le Fort I fracture. Coronal CT image shows bilateral fractures of pterygoid processes (arrows).