Sphenoidal angle of parietal bone - Skull - Parietal bone - e-Anatomy
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Sphenoidal angle of parietal bone

Angulus sphenoideus ossis parietalis

  • Latin synonym: Angulus sphenoidalis
  • Related terms: Sphenoidal angle

Definition

The sphenoidal angle of parietal bone is thin and acute. It matches the pterion region in the floor of the temporal fossa, where the parietal bone connects with the greater wing of sphenoid bone, forming the sphenoparietal suture. The frontal and temporal bones also join at this location. Together, these four bones create an area called the pterion. On its inner surface, you’ll find grooves for the middle meningeal artery and its branches. A fracture here can cause these arteries to tear, leading to an epidural hemorrhage.

References

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Text written by Muhammad A. Javaid, MD, PhD © 2024 IMAIOS.

  • Anderson, B.W., Kortz, M.W., Black, A.C., et al. Anatomy, Head and Neck, Skull. [Updated 2023 Nov 9]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2024 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK499834/

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