Supratrochlear Artery, Lateral View

Description

Seen in lateral profile, the supratrochlear artery ascends from the superomedial orbit toward the forehead, coursing anterior to the frontal bone and emerging near the medial canthus. Its origin from the ophthalmic artery is implied deep within the orbit, where the vessel travels superiorly above the trochlea of the superior oblique muscle and medial to the supraorbital neurovascular bundle. Surrounding context includes the cranial and facial skeleton in profile, the nasal cavity and orbital margins, and a cervical spine segment inferiorly supporting the skull base. Red arterial channels and blue venous pathways trace the head and neck circulation, with the supratrochlear vessel standing out as a fine-caliber terminal branch. For clinicians, this lateral perspective is the one you want when teaching the relationship of the anterior ethmoidal region, medial orbit, and forehead perfusion territories. The supratrochlear artery supplies the medial forehead and glabella and forms anastomoses with the supraorbital and contralateral supratrochlear arteries, a point that matters in paramedian forehead flap planning and in avoiding vascular compromise during glabellar filler injections. In cosmetic and reconstructive procedures, intravascular injection into supratrochlear or ophthalmic-linked branches can precipitate retinal ischemia, so a clear mental map of this medial orbital exit zone is nonnegotiable. Small vessel, big consequence. Use this artwork in head and neck anatomy courses, oculoplastics and facial plastics teaching files, and operative consent or patient-education materials that discuss medial brow lacerations, flap design, or injection safety around the inner canthus. It also fits neatly into atlases and journal figures addressing ophthalmic artery branches and forehead angiosomes. Anatomical accuracy verified by SciePro's Medical Advisory Board.