Table 5.
Midface Regional Unit Classification System
| Fracture | Description/ Midface Regional Units Involved | Corresponding Le Fort |
|---|---|---|
| F in situ | Fracture without fragment mobility | -- |
| F1 | 1 | -- |
| F2 | 2 | LeFort I |
| F3 | 3 | LeFort I |
| F4 | ≥4 | LeFort II and LeFort III |
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