Frontal notch
Incisura frontalis
- Synonym: Supratrochlear notch
- Related terms: Frontal notch; Frontal foramen
Definition
Along the superior margin of the orbit, there’s a notch that sometimes turns into a hole, known as the frontal notch or frontal foramen. It is located medial to the supraorbital foramen. This notch lets the medial branch of supraorbital nerve pass through, whereas the lateral branch goes through the supraorbital foramen. Often, there is another foramen called the supratrochlear foramen, which is found even more medial to the frontal notch or foramen. This allows the supratrochlear nerve and vessels to pass through.
References
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Text written by Muhammad A. Javaid, MD, PhD © 2024 IMAIOS.
Kato, N. and Outi, H. (1962). Relation of the supraorbital nerve and vessels to the notch and foramen of the supraorbital margin. Okajimas Folia Anatomica Japonica, 38(5), pp.411-424.
