Suprameatal Fovea Of The Temporal Bone, Lateral View

Description

Suprameatal fovea sits on the squamous part of the temporal bone, immediately superior and slightly posterior to the rim of the external acoustic meatus in a fixed lateral skull perspective. The depression is outlined against the adjacent suprameatal crest and the posterosuperior margin of the tympanic part, with the zygomatic process extending anteriorly toward the mandibular fossa. Posteriorly, the surface contour trends toward the mastoid region, where the mastoid process and the supramastoid crest define the transition from squamous to mastoid portions. Spatially, the fovea lies superior to the tympanic plate and lateral to the mastoid air cell system, placing it in the classic suprameatal (Macewen) triangle region used as a surface guide to deeper middle ear and mastoid anatomy. Otologic surgeons care about this landmark because it approximates the location of the mastoid antrum and helps orient drilling during cortical mastoidectomy, where depth and angulation matter for avoiding the sigmoid sinus posteriorly and the tegmen mastoideum superiorly. A small change in surface topography can also be relevant in temporal bone trauma, where fractures near the external acoustic meatus and tympanic ring may alter bony contours and complicate canal wall evaluation. Fine lighting on the lateral cortex clarifies the shallow, triangular geometry of the fovea relative to the meatal rim and zygomatic root. Small feature, big consequences. Use this illustration in head and neck anatomy teaching (temporal bone osteology), in otology and neurotology textbooks discussing mastoidectomy landmarks, or in preoperative counseling materials that label bony reference points around the external acoustic meatus and mastoid cortex. Anatomical accuracy verified by SciePro's Medical Advisory Board.