Akademik Veri Yönetim Sistemi
Erciye Tıp Dergisi, cilt.29, sa.2, ss.106-109, 2006 (Hakemli Dergi)
Özet
Amaç: Meatus acusticus internus yaklaþýk 1 cm uzunluðunda olup temporal kemiðin petroz
parçasýnýn arka yüzünün merkezine yakýn olarak açýlýr. Bu çalýþmanýn amacý porus acusticus
internus.un temporal kemiðin petroz parçasýnýn arka yüzünde iþgal ettiði alaný incelemektir.
Gereç ve Yöntem: Bu çalýþmada cinsiyetleri bilinmeyen 50 kuru kafatasýna ait 100 temporal
kemik incelendi. Porus acusticus internus.un ve petroz parçanýn arka yüzünün tüm yüzey alaný
Cavalieri prensibi yardýmýyla hesaplandý. Porus acusticus internus.un arka yüze oraný belirlendi.
Ayrýca meatus acusticus internus.un arka duvar uzunluðu, porus.un vertikal ve sagittal çaplarý
ölçüldü.
Bulgular: Porus acusticus internus.un alanýnýn petroz parçanýn arka yüzey alanýna oraný saðda
%4,82 solda ise %4,54.dür. Arka duvar uzunluðu saðda 15 mm, solda 14 mm olarak belirlendi.
Vertikal çap saðda 4,51 mm, solda 4,55 mm olarak belirlenirken sagittal çap ise saðda 6,85
mm, solda 6,61 mm tespit edilmiþtir.
Sonuç: Ölçülen bu mesafeler bölgeye yapýlacak cerrahi müdahalelerde ve meatus acusticus
internus duvarýndan uzaklaþtýrýlacak kemik miktarýný tespit etmede yararlý olabilir.
Anahtar Kelimeler:
Kafatasý; Temporal kemik; Petroz kemik
Abstract
Purpose: Internal acoustic meatus is about one cm length and opens near the center of
posterior surface of the petrous part of temporal bone. The aim of the study was to analyze
the occupation of porus acousticus internus in facies posterior of petrous part of temporal bone.
Material and Methods: In this study, 100 temporal bones of 50 dry skulls (unknown sex)
were examined. The areas of whole surface of the facies posterior of petrous part and porus
acousticus internus were calculated with the help of the Cavalieri principle. The ratio of the
porus acousticus internus to facies posterior was calculated. The posterior wall length of internal
acoustic meatus vertical and sagittal diameter of the porus were also measured.
Results: The ratio of area of the porus acousticus internus to facies posterior partis petrosa
was 4.82% on the right and 4.54% on the left. The length of the posterior wall was 15mm on
the right and 14 mm on the left. Vertical diameter was 4.51mm on the right and 4.55mm on
the left and sagittal diameter was 6.85mm on the right and 6.61mm on the left.
Conclusion: The measurement of the distances could be useful in guiding the degree of bony
removal for safety surgery.
Key Words: Skull; Petrous bone; Temporal bone.