Le Fort II fracture (pyramidal fracture) involves which structures?
- A Pyramidal fracture through nasal bones, medial orbital walls, inferior orbital rims, and pterygoid plates ✓
- B Horizontal fracture above the upper incisor roots extending through pterygoid plates (Guerin fracture)
- C Fracture separating the entire midface from the skull base through the zygomatic arches and pterygoid plates
- D Fracture of the zygomatic complex only
Correct answer: A. Pyramidal fracture through nasal bones, medial orbital walls, inferior orbital rims, and pterygoid plates
Explanation
Le Fort II (pyramidal) fracture extends through the nasal bones, lacrimal bones/medial orbital walls, inferior orbital rims (through or just below the infraorbital foramen), maxillary antrum, and pterygoid plates. Le Fort I is horizontal (palate + alveolus from pterygoids). Le Fort III separates the entire craniofacial skeleton (zygomatic arches, nasofrontal suture, orbital walls, pterygoid plates). Zygomatic complex fracture is a separate entity.
Reference: Dhingra Diseases of Ear, Nose and Throat, 7th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.