Question
Fracture classification shown in photograph involves ?
A. Zygomatic arch.
B. Maxilla.
C. Mandible.
D. Nasal bones.
Show Answer
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Correct Answer » B Explanation |
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Ans:B. Maxilla.
Fracture classification shown in photograph above represents Le Fort classification.
Le Fort fracture
It is a classic transfacial fracture of the midface, involving the maxillary bone and surrounding structures in either a horizontal, pyramidal or transverse direction.
Classification:
- Le Fort type 1
- horizontal maxillary fracture, separating the teethfrom the upper face
fracture line passes through the alveolar ridge, lateral nose and inferior wall of maxillary sinus.
- Le Fort type 2
- pyramidal fracture, with the teeth at the pyramid base, and nasofrontal suture at its apex
- fracture arch passes through posterior alveolar ridge, lateral walls of maxillary sinuses, inferior orbital rim and nasal bones
- Le Fort type 3
- craniofacial dysjunction
- fracture line passes through nasofrontal suture, maxillo-frontal suture, orbital wall, and zygomatic arch / zygomaticofrontal suture.