Each Nasal Bone is a little rectangular, more oblong in shape. It has four borders: superior, inferior, medial and lateral. It also has two surfaces: inner surface that is concave from side to side. It contains a groove for the passage of the Nasociliary Nerve. Outer surface is concavo convex from top to bottom. It is convex from side to side. Each Nasal Bone have connection with four bones, two from cranium, the Ethmoid and Frontal, and two facial bones, the Maxillary and opposite Nasal Bone.
The innervation to the Nasal Bone is derived from the Facial Nerve.
The function of the Nasal Septum is to provide protection to the internal delicate structures of the Nose. This bridge provides support to the Nasal cavity and is essential for keeping the airway patent.
As the Nasal Bone is the most prominent feature of the face, so it is the most common structure of the face to be damaged. The fractures of Nasal Bone lead to the following complications:
- Cosmetic deformity
- Permanent Nasal deviation
- CSF leak
- Orbital edema
- Nasal blockade which causes compromised Nasal functions.