Anterior Perspective of the Levator Labii Superioris

Description

Presented from an anterior facial perspective, the levator labii superioris is seen arising from the maxilla just inferior to the orbital rim, close to the infraorbital foramen, then descending inferiorly to blend with the musculature of the upper lip. Medially, fibers approach the lateral border of the nose and sit adjacent to the nasalis over the nasal cartilages, while laterally the muscle lies superficial to the anterior maxilla and superior to the orbicularis oris at the level of the philtrum and upper labial sulcus. Underlying bony landmarks include the frontal bone, nasal bones, maxilla with dentition, and the orbit; inferiorly, the mandible and upper cervical vertebrae (atlas and axis) provide orientation. Clear midface topography. Functionally, levator labii superioris elevates the upper lip and deepens the nasolabial fold, actions that become clinically obvious in facial nerve weakness (buccal and zygomatic branches) and in patterns of asymmetry after trauma or reconstructive surgery. Its proximity to the infraorbital nerve as it exits the infraorbital foramen matters in maxillofacial approaches and regional anesthesia, since edema, scarring, or surgical dissection in this plane can produce altered sensation of the upper lip, lateral nose, and lower eyelid. The relationship to the nasalis and lateral nasal wall also helps explain coupled movements seen in rhinoplasty planning and in chemodenervation for upper-lip hyperactivity (gummy smile). Use this artwork in head and neck anatomy teaching blocks, dental and oral surgery lectures on infraorbital nerve block technique, and ENT or facial plastic surgery materials covering midface dissection planes and perinasal musculature. It also suits patient-facing education on facial palsy patterns when paired with functional diagrams. Anatomical accuracy verified by SciePro's Medical Advisory Board.