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Dergiler / Anatomy / 2026 / Volume: 20 Issue: 2

A morphometric and typological study of the clivus for guiding endoscopic skull base surgery

Ayşen Çalıkuşu(EGE UNIVERSITY, INSTITUTE OF HEALTH SCIENCES, ANATOMY (MEDICINE) (DR))0000-0003-0313-1906
Özden Bedre Duygu(İZMİR BAKIRÇAY ÜNİVERSİTESİ, TIP FAKÜLTESİ)0000-0001-7140-7340
Yelda Pınar(EGE ÜNİVERSİTESİ, TIP FAKÜLTESİ, TEMEL TIP BİLİMLERİ BÖLÜMÜ, ANATOMİ ANABİLİM DALI)0000-0001-6026-3564
Figen Gökmen(EGE ÜNİVERSİTESİ, TIP FAKÜLTESİ, TEMEL TIP BİLİMLERİ BÖLÜMÜ, ANATOMİ ANABİLİM DALI)0000-0001-9635-6308
Dergi
Anatomy
Sayfa
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Yayın Tarihi
2026-08-31
DOI
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

The symmetric border type showed a regular and balanced morphology, providing a consistent bony boundary that may aid intraoperative orientation.

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Amaç & Hipotez:Objectives: Endoscopic transnasal transsphenoidal approaches to lesions involving the clivus carry several disadvantages for midline skull base lesions, including higher morbidity and a lesser extent of resection.
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Temel Bulgular & Veri:Methods: Clivus length, width, thickness and area, opisthion–dorsum sellae length, dorsum sellae–basion angle, and foramen magnum length and width were evaluated on 32 adult dry human skulls using ImageJ.
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Sonuç & Katkı:The symmetric border type showed a regular and balanced morphology, providing a consistent bony boundary that may aid intraoperative orientation.
🔬Tür:Research Article
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:anatomy · clivus · foramen magnum

Abstract

Objectives: Endoscopic transnasal transsphenoidal approaches to lesions involving the clivus carry several disadvantages for midline skull base lesions, including higher morbidity and a lesser extent of resection. This study aimed to investigate the anatomical detail of the clivus in order to identify failure criteria and improve success parameters. Methods: Clivus length, width, thickness and area, opisthion–dorsum sellae length, dorsum sellae–basion angle, and foramen magnum length and width were evaluated on 32 adult dry human skulls using ImageJ. The prevalence of clivus shape, border type and surface type was also determined. Results: Mean clivus length was 3.52±0.37 cm in females and 3.25±0.63 cm in males, and clivus width was 1.42±0.50 cm and 1.41±0.57 cm, respectively. Among clivus types, the long-straight type had the greatest length (4.16±0.25 cm) and the short-sloped type the shortest (2.98±0.36 cm). The most common clivus shape was the short-sloped type (56.25%), the most frequent border type was inward-curved (40.6%), and the most common surface type was concave (56.25%). An asymmetric shape was observed in 31.25% of specimens, an irregular surface in 25%, and asymmetric borders in 31.3%. Foramen magnum length was significantly greater in males (p<0.001). Conclusion: The long-straight clivus appears most suitable for transnasal/transclival access and tumour resection, whereas asymmetric types require careful preoperative evaluation. The symmetric border type showed a regular and balanced morphology, providing a consistent bony boundary that may aid intraoperative orientation.

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Bu Makaleye Atıf Yap

Çalıkuşu, A., Duygu, Ö. B., Pınar, Y., Gökmen, F. (2026). A morphometric and typological study of the clivus for guiding endoscopic skull base surgery. Anatomy, Volume: 20 Issue: 2. https://ajindex.com/articles/1189889

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