Pterion morphology and morphometry in adult skulls

22nd National Anatomy Congress, Ankara, Türkiye, 13 - 17 Ekim 2021, cilt.15, ss.31, (Özet Bildiri)

Yayın Türü: Bildiri / Özet Bildiri
Cilt numarası: 15
Basıldığı Şehir: Ankara
Basıldığı Ülke: Türkiye
Sayfa Sayıları: ss.31
Kütahya Sağlık Bilimleri Üniversitesi Adresli: Hayır

Özet

Objective: Pterion is an important topographical point located at the junction of the frontal, sphenoid, temporal and parietal bones. In addition to being the most vulnerable place of the skull against trauma, it can cause epidural hematoma as a result of arteria meningea media rupture. Also its morphology and morphometry gain importance as it is the surgical access point to Broca’s motor speech area, sulcus lateralis cerebri and insula. With this study, we aimed to contribute to the forensic and archaeological literature by determining the incidence of pterion types in Turkish adult skulls, as well as to contribute to surgical intervention planning by measuring the distance of the pterion to important anatomical points. Methods: Adult craniums which belong to the anatomy laboratory of Ayd›n Adnan Menderes University Faculty of Medicine were used in our study. Craniums with alveoli of dens molaris tertius were evaluated as adult skulls and included in the study. Craniums with unspecified gender or damage due to trauma or wear at the pterion or other topographical points to be measured excluded from the study. Since we did not aim to examine asymmetry in craniums, craniums that we could measure only on the right or left side were also included in the study. In total, 53 pterion images were obtained. Craniums included in the study were photographed with Nikon D5300 from a distance of 60 cm, and the images were transferred to ImageJ version 1.53 program for morphometric measurements. In our study, the classification defined by Murphy T. in 1956 was applied for pterion morphology. SPSS for Windows release 18.0 program was used for statistical analysis of the data. The mean, standard deviation, minimum and maximum values of the data were calculated. Normality control of continuous variables with Shapiro Wilk test; Homogeneity control was done by Levene test. Student’s t test was applied since normal distribution was determined in the comparison of genders and means between the right and left sides. Statistical significance criterion was accepted as p<0.05. Results: Of the pterions, 1 (1.8%) was epipteric, 3 were (5.6%) frontotemporal, 3 were (5.6%) stellate, and 46 were (86.7%) sphenoparietal type. The mean distances from the center of the pterion as the to the zygomatic arch were (vertical distance) 42.39±6.97 mm; to the frontozygomatic suture 31.36±5.74 mm; to the zygomatic angle 43.20±6.41 mm; to the mastoid process 84.31±10.03 mm; to the upper border of meatus acousticus externus 56.84±7.14 mm Conclusion: Our morphometric and morphological study results are consistent with the results of previous studies. Malefemale and right-left measurements were not statistically significant. (p>0.05) We think that the results we obtained in our study will contribute to forensic and archaeological studies and will be important in the planning of surgical interventions. Keywords: pterion, morphometry, morphology