The supratrochlear artery is a terminal vascular branch of the Arteria ophthalmica, which in turn is the first intracranial branch of the Arteria carotis interna.
Anatomy
The supratrochlear artery exits the Orbit together with the supratrochlear vein through the frontal notch in its superior medial quadrant. After exiting the Orbit, the vessel ascends vertically toward the forehead, approximately 2 cm from the midline. The supratrochlear artery forms numerous anastomoses, including with the Supraorbital artery, the contralateral supratrochlear artery, and the frontal branch of the Superficial temporal artery. [^1].
Blood supply
The supratrochlear artery supplies blood to the skin of the medial forehead and scalp, as well as the underlying Pericranium and frontalis muscle.
