Supraorbital Foramen, Lateral View

Description

Supraorbital foramen (often a supraorbital notch) is positioned on the superior orbital margin of the frontal bone, just lateral to the medial orbital roof and superior to the orbital cavity. From this lateral perspective, the bony opening sits along the sharp rim of the orbit where the frontal bone transitions from the anterior surface of the forehead to the superior wall of the orbit, with the concavity of the orbital margin curving inferiorly and posteriorly away from the viewer. The notch-like morphology is apparent as an interruption in the otherwise continuous supraorbital rim, a common anatomical variant that may range from a shallow groove to a complete foramen. Small but consequential. Clinically, this landmark guides localization of the supraorbital neurovascular bundle (supraorbital nerve, artery, and vein) as it exits the orbit to supply sensation and blood flow to the forehead and anterior scalp. Palpation and surface marking for a supraorbital nerve block often target the notch/foramen along the brow, while surgeons planning upper blepharoplasty incisions, endoscopic brow lift portals, or fixation points along the superior orbital rim need an accurate appreciation of its position to avoid neuropraxia or postoperative dysesthesia. The lateral vantage clarifies the relationship between the supraorbital opening and the curvature of the orbital margin, which can be harder to teach when viewed only frontally. Use this illustration in gross anatomy courses covering the skull and orbit, in procedural guides for regional anesthesia of the forehead, and in surgical education materials addressing periorbital trauma repair and cosmetic forehead approaches. It also suits radiology and forensic references when discussing normal variation of the frontal bone at the superior orbital rim. Anatomical accuracy verified by SciePro's Medical Advisory Board.