A craniofacial disjunction is known as what type of LeFort fracture?

A craniofacial disjunction is associated with a LeFort III fracture. This type of fracture involves a complete separation of the facial skeleton from the cranial base, leading to a disjunction that can severely impact the structural integrity of the face. In LeFort III fractures, there is typically horizontal and vertical dislocation of the facial bones from the skull, which can result in significant mobility of the face along with associated injuries to the orbits and skull base.

LeFort I and LeFort II fractures involve a lesser degree of disjunction, where in LeFort I the separation occurs above the level of the teeth, and in LeFort II, there is a pyramidal fracture pattern that affects the maxilla and involves separation of the nasal bridge but does not achieve the craniofacial disjunction seen in LeFort III. LeFort IV is less commonly referenced and involves additional cranial injury. Understanding the distinctions between these types of fractures is crucial for proper diagnosis and treatment in craniofacial trauma.