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b. Le Fort II

The Le Fort II classification starts in the maxilla laterally but extends

more superiorly into the orbital floor. It crosses the anterior inferior and

medial orbits and crosses the nasal bones superiorly, or separates the

nasal bones from the frontal bones at the frontonasal suture. It contin-

ues posteriorly across the nasal septum and pterygoid plates. It is

commonly called the pyramidal fracture due to the pyramidal shape of

the inferior facial fragment.

c. Le Fort III

Finally, the Le Fort III classification completely separates the facial

bones from the skull, resulting in what is known as a complete craniofa-

cial separation. It traverses the zygomatic arches laterally and the

lateral orbital rims and walls, crosses the orbital floors more posteriorly,

crosses the medial orbits (lamina papyracea), and is completed at the

Figure 4.3

Illustration depicting: (A) Le Fort I, (B) Le Fort II, and (C) Le Fort III fractures.

Source:

Kellman and Marentette, Figure 8-29.