Research Article

Morphometric Analysis of the Clivus in Human Dry Skulls: A Radioanatomical Study


  • Hakan Özalp
  • Orhan Beğer
  • Osman Erdoğan
  • Engin Kara
  • Vural Hamzaoğlu
  • Yusuf Vayisoğlu
  • Ahmet Dağtekin
  • Ahmet Hakan Öztürk
  • Celal Bağdatoğlu
  • Derya Ümit Talaş

Received Date: 07.03.2019 Accepted Date: 12.05.2019 J Ankara Univ Fac Med 2019;72(2):227-230


This study aims to reveal morphometric properties of the clivus including length, width and angle to the base of the skull from the perspective of skull base procedures.

Materials and Methods:

Twenty-four human dry skulls were included in the inventory of Mersin University Medical Faculty Anatomy Department. Direct anatomic measurements (DAM) were performed using digital caliper and digital image analysis software. Radiological analysis was performed using computed tomography (CT).


The length and inner surface area of the clivus for DAM and CT were 25.17±3.98/24.83±3.91 mm and 546.51±66.44/523.37±87.48 mm2, respectively. Clival angle (Welcher angle) for DAM and CT was 126.12±9.51°/124.37±10.86°. No statistically significant difference was found between the numerical data obtained by DAM and CT (p>0.05).


Considering that clivus anomalies are associated with diseases such as platybasia, basilar invagination, CHARGE syndrome or Chiari type I, the data of the present study can be used for the detection of clivus anomalies as well as choosing the type of approach to the skull base.

Keywords: Clivus, CHARGE, Chiari I, Platybasia

Full Text (Turkish)