## Core Concept
Le Fort's fractures are classifications of facial fractures that involve the maxillary bone and surrounding structures. They are typically caused by severe facial trauma. There are three types of Le Fort fractures, each with distinct characteristics.

## Why the Correct Answer is Right
The Le Fort fractures are as follows:
- **Le Fort I**: A horizontal fracture across the maxilla, above the teeth and palate, but below the nasal fossa. It does not involve the orbital floor or zygomatic arches.
- **Le Fort II**: A pyramidal fracture that includes the maxilla and lacrimal bone, with a fracture through the orbital floor and the nasal bridge. It involves the medial wall of the orbit.
- **Le Fort III**: A severe fracture that involves a complete separation of the facial bones from the cranial base, including fractures through the orbits, zygomatic arches, and nasal bridge.

## Why Each Wrong Option is Incorrect
- **Option A:** Le Fort I involves the maxilla but does not extend to the orbital floor or zygomatic arches, making it a likely candidate for not involving certain structures.
- **Option B:** Le Fort II involves the orbital floor and medial wall of the orbit.
- **Option C:** Le Fort III involves the orbits, zygomatic arches, and nasal bridge.

## Why D is Correct and Others are Incorrect in Detail
- **Option A (Le Fort I)** does not involve the orbital floor or the zygomatic arches; hence, it is the fracture that does NOT involve these structures.
- **Option B (Le Fort II)** and **Option C (Le Fort III)** both involve more extensive facial and orbital structures.

## Clinical Pearl / High-Yield Fact
A key point to remember is that Le Fort fractures are often associated with significant trauma and can be part of a larger pattern of injury. The classification helps in planning surgical intervention.

## Correct Answer: D. Le Fort I.