Akademik Veri Yönetim Sistemi
27th International Medical Sciences Student Congress, İstanbul, Türkiye, 14 - 15 Mayıs 2022, ss.1, (Özet Bildiri)
INTRODUCTION: The parietal foramen (PF)
is a small inconsistent opening where may be located either or both parietal
bones near the sagittal suture at the posterior aspect of the parietal bone.
The parietal emissary veins which pass through this foramen, connect the scalp
veins to the superior sagittal sinus. These veins being valveless provide
bidirectional flow of blood, and allow balancing the intracranial and
extracranial pressure, whereas causes as a pathway for transmission of
infection. In addition to the parietal
emissary veins relationships of these foramen, the PF serves as a “canal” for
anastomosis between the middle meningeal and scalp arteries, and an injured
dural segment of the anastomotic artery may lead to epidural hematoma in a
related location.
OBJECTIVES: Variation in the PF is common and such variation is important
clinically. The purpose of this study was to examine the parietal foramen and
to emphasize its possible clinical implications.
METHODS: A total of 100 (50 right and
50 left) dried human parietal bones of unknown age and gender from the
Department of Anatomy, Istanbul Faculty of Medicine were examined carefully.
The presence, number, and patency of PF were recorded as well as shape and
direction. The length of the sagittal
suture, the vertical distance of PF from the sagittal suture and from lambda
were measured with a digital caliper. The diameter of PF was determined with
various diameters of needles. Obtained data was noted. Mean and standard
deviation was calculated and tabulated.
RESULTS: The total incidence of the PF
was 68 % (68/100), slightly more on the left side (33%, 33/100) than on the
right side (31%, 31/100). The PF also located on the sagittal suture was 4%
(4/100). The single foramen type was the most (89.7%, 61/68). The intracranial
and extracranial communication was 67.6 % whereas the closed PF was 33.4%. Circular
(91.17%) and oval (8.83%) shaped PF were observed. The majority of the PF were posteroanterior
direction. The mean diameter of PF recorded was 0.86 ±0.29 mm. The average length of
the sagittal suture, the mean distance of PF from the sagittal suture and from
lambda was 107.52±7.49mm, 7.74± 3.62 mm and 33.34±14.57mm, respectively.
CONCLUSION: With this study, preliminary data was obtained
for PF. It was planned to expanding these results. Variations in PF are common.
During surgery to the parietal region, the surgeon's awareness of these
foramina can prevent complications that may develop. KEYWORDS: Parietal foramen, parietal emissary veins, surgery,
sagittal suture, lambda.