What is perpendicular plate?

The perpendicular plate is a structure located within the ethmoid bone of the skull. It is a thin, vertical bone that forms the upper part of the nasal septum, dividing the nasal cavity into two separate chambers.

The perpendicular plate extends superiorly from the cribriform plate of the ethmoid bone and projects downward to meet the vomer bone in the lower part of the nasal septum. It also articulates with the nasal bones and the maxillary bones.

The main function of the perpendicular plate is to provide structural support and separation between the two nasal cavities. It also helps to direct airflow through the nasal passages and plays a role in the sense of smell.

In addition to its structural importance, the perpendicular plate is also an important landmark for surgical procedures involving the nasal septum, such as septoplasty or rhinoplasty. In cases of nasal trauma or deformity, the perpendicular plate may be affected, leading to functional and aesthetic issues that may require surgical intervention.