Supratrochlear artery

The supratrochlear artery (or frontal artery) is one of the terminal branches of the ophthalmic artery. It arises within the orbit.^[1][2] It exits the orbit alongside the supratrochlear nerve. It contributes arterial supply to the skin, muscles and pericranium of the forehead.^[3]

Supratrochlear artery
The ophthalmic artery and its branches (supratrochlear artery labeled at center top)
The arteries of the face and scalp (supratrochlear artery labeled at upper right, above eye)
Details
Source	Ophthalmic artery
Supplies	Skin of medial forehead and scalp, underlying pericranium and frontalis muscle
Identifiers
Latin	arteria supratrochlearis, arteria frontalis
TA98	A12.2.06.048
TA2	4499
FMA	50025
Anatomical terminology [edit on Wikidata]

Anatomy

It branches from the ophthalmic artery near the trochlea of the superior oblique muscle in the orbit.^[1][2]

Origin

The supratrochlear artery branches from the ophthalmic artery in the orbit near the trochlea of the superior oblique muscle.^[1][2]

Course

After branching from the ophthalmic artery, it passes anteriorly through the superomedial orbit. It travels medial to the trochlear nerve. With the supratrochlear nerve, the supratrochlear artery exits the orbit through the supratrochlear notch (variably present), medial to the supraorbital foramen. It then ascends on the forehead.^{[citation needed]}

Anastomoses

The supratrochlear artery anastomoses with the contralateral supratrochlear artery, and the ipsilateral supraorbital artery.^[3]

Distribution

The supratrochlear artery supplies blood to the skin of the medial aspect of the forehead and scalp, as well as the underlying pericranium and frontalis muscle.^{[citation needed]}