Supraorbital Notch

Supraorbital notch is a visible notch on the frontal bone for distribution of the supraorbital nerve along with vessels towards the forehead, at the junction of the medial one-third and lateral two-thirds of the supraorbital margin. It is bridged by fibrous tissue, which occasionally undergoes ossification, creating a bony opening called supraorbital foramen.

Supraorbital Notch

Relations

•  Supra-orbital notch is exhibited on supra-orbital margin.
•  The frontal notch is located medial towards this notch.
•  The supra-orbital margin spreads outwards laterally as the zygomatic process.
• Superior and inferior temporal lines are created by the division of a line that passes backwards from this process.
•  Before dividing into superficial and deep branches that give sensory innervation to the ipsilateral forehead, the supraorbital nerve travels via this notch, which is a branch of the frontal nerve originating from the ophthalmic division of the trigeminal nerve (cranial nerve V).