Groove for Superior Sagittal Sinus (Frontal Part)

Description

The groove for superior sagittal sinus (sulcus for superior sagittal sinus, or sagittal sulcus) is a shallow depression found along the midline on the internal surfaces of the frontal, parietal and occipital bones.

For descriptive purposes, the groove for superior sagittal sinus can be arbitrarily divided into three portions:

- anterior portion, which is located on the frontal bone and is the superior continuation of its frontal crest that extends posterosuperiorly to its parietal margin;

- middle portion, which is located on both the right and left parietal bones and travels posteriorly along their sagittal borders and then curves in a posteroinferior direction towards the occipital bone;

- posterior portion, which is located on the occipital bone and extends inferiorly from its superior angle towards the internal occipital protuberance, where it becomes continuous with the groove for transverse sinus on the right side of the occipital bone.

The groove for superior sagittal sinus lodges the superior sagittal sinus and its margins provide attachment sites for the falx cerebri.