Anatomical Characteristics Of The Temporal Surface Of The Frontal Bone

Description

Frontal bone temporal surface occupies the inferolateral part of the squama frontalis, curving posteriorly from the forehead into the temporal region. Along its superior aspect, the temporal line is visible as a low ridge that continues toward the parietal bone, marking the superior boundary of the temporal fossa and the limit of temporalis fascia attachment. Inferior and anterior, the zygomatic process of the frontal bone projects toward the zygomatic bone, forming the frontozygomatic region, while the posterior margin approaches the frontosphenoidal area near the greater wing of the sphenoid. Orientation is lateral, emphasizing the smooth, slightly concave contour that faces the temporalis muscle. This area matters because it defines the anterior wall and roof of the temporal fossa, a surgical corridor used in pterional and frontotemporal craniotomies, where bone removal and reconstruction must respect the temporal line to avoid postoperative contour deformity. The frontozygomatic region is also a practical landmark for the “keyhole” burr hole in cranial access, placed just posterior to the frontozygomatic suture to enter the anterior cranial fossa safely while staying clear of the orbit. A delicate bony surface. Use this illustration for teaching skull osteology in gross anatomy, dental anatomy, and neurosurgical approaches, and for labeling in atlases, operative manuals, and patient education materials addressing frontotemporal craniotomy planning or craniofacial trauma involving the frontozygomatic buttress. Anatomical accuracy verified by SciePro's Medical Advisory Board.