上頜骨骨折(maxillary fracture)

Maxillary fracture

1. LeFort classification

Le Fort I Fracture = Horizontal Fracture

Clinical finding:

• Facial edema
• Malocclusion of the teeth
• Motion of the maxilla while the nasal bridge remains stable

2. Le Fort II Fracture = Pyramidal Fracture

Clinical finding:

• Marked facial edema
• Nasal flattening
• Traumatic telecanthus
• Epistaxis or CSF rhinorrhea
• Movement of the upper jaw and the nose.

Le Fort III Fractures = Craniofacial Separation

Clinical finding:

• Dish faced deformity
• Epistaxis and CSF rhinorrhea
• Motion of the maxilla, nasal bones and zygoma
• Severe airway obstruction