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Parietal foramen: incidence and topography
J Naidoo1, J S Luckrajh1, L Lazarus2
1Department of Clinical Anatomy, School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban, South Africa.
Folia Morphologica
|November 26, 2020
Summary
Parietal foramina (PF) are small skull openings near the sagittal suture. This study found PF present in 67% of skulls, aiding neurosurgeons in avoiding injury to emissary veins.
Area of Science:
- Anatomy
- Anthropology
- Neurosurgery
Background:
- Parietal foramina (PF) are small, inconsistent apertures in the parietal bone near the sagittal suture.
- These openings function as emissary foramina, transmitting vessels and nerves, and exhibit common variations.
- Understanding PF anatomy is crucial for neurosurgical procedures due to the risk of damaging associated emissary vessels.
Purpose of the Study:
- To determine the frequency, diameter, and topographical characteristics of parietal foramina (PF).
- To utilize the sagittal suture as a key anatomical landmark for PF localization.
- To provide data relevant to neurosurgical planning and risk mitigation.
Main Methods:
- Examination of 100 dry adult human calvaria.
- Assessment of parietal foramen presence (bilateral, unilateral, or sagittal).
- Measurement of parietal foramen diameter and distance from the sagittal suture.
Main Results:
- Parietal foramina were present bilaterally in 32% and unilaterally in 35% of the studied calvaria.
- The mean diameter of the parietal foramina was 1.55 mm.
- The average distance from the lateral margin of the parietal foramen to the sagittal suture was 9.02 mm.
Conclusions:
- Knowledge of parietal foramen incidence and location is vital for neurosurgeons.
- Understanding PF anatomy can help refine surgical techniques to minimize injury risks.
- This anatomical data supports improved patient safety during cranial procedures involving emissary structures.
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