A Computed Tomographic Study of the Anterior Clinoid Process Measurements in Turkish Population

Abstract

Objectives: Anterior clinoid process which is partially or totally takes out in the surgery of sellar region has a great surgical importance. For effective clinoidectomy, a neurosurgeon should have the prior knowledge of anatomical variations of anterior clinoid process. The aim of this study was to investigate the dimensions, pneumatization and variation of anterior clinoid process in Turkish population. Materials and Methods: A Multidetector Computerized Tomography images of 500 subjects (270 male, 230 female), between 19 and 86 years of age, were included in the study. Dimensions of anterior clinoid process, presence and types of pneumatization of the anterior clinoid process and pneumatization types (1, 2 or 3) were evaluated. Results: The average basal width and length of anterior clinoid process on right side was 11.97±1.90 and 6.8±1.58 mm, respectively, and on the left side it was 11.73±1.71 and 7.94±1.81 mm, respectively. Right, left and bilateral pneumatization were detected in 12%, 12% and 4% respectively. The most commonly seen types of pneumatization of anterior clinoid process were type 1 (50%) for right pneumatization and type 2 pneumatizationfor left (59%) and bilateral (40%) pneumatization. Conclusion: The anatomic variations of the anterior clinoid process should be considered in the approaches to the cavernous sinus and the sellar region.

Keywords

• Anterior Clinoid Process
• Anterior Clinoidectomy
• Computed Tomography
• Measurements
• Pneumatization

Türk Nüfusundaki Anterior Klinoid Proses Ölçümlerinin Bilgisayarlı Tomografik Çalışması

Abstract

Amaç: Sellar bölge tümörlerinin ya da anevrizmalarının cerrahi olarak tedavisi sırasında genellikle ortadan kaldırılan anterior klinoid proses, cerrahi öneme sahiptir. Etkili klinoidektomi için, bir beyin cerrahı anterior klinoid prosesin anatomik varyasyonları hakkında önceden bilgi sahibi olmalıdır. Bu çalışmanın amacı, Türk nüfusundaki Anterior klinoid proses şekil, boyut, pnömotizasyonu ve varyasyonlarını araştırmaktır. Gereç ve Yöntem: Çalışmaya, 19 ile 86 yaşları arasındaki 500 olgunun (270 erkek, 230 kadın) bilgisayarlı tomografi görüntüleri dahil edildi. Anterior klinoid prosesin boyutları, anterior klinoid proses pnömatizasyonu varlığı ve pnömatizasyon tipleri (1, 2 veya 3) değerlendirildi. Bulgular: Anterior klinoid prosesin bazal uzunluğu ve genişliği sağda 11,97±1,90 ve 6,8±1,58 mm iken, solda 11,73±1,71 ve 7,94±1,81 mm bulundu. ACP pnömatizasyonu, sağ %12, sol %12 ve bilateral %4 olarak saptandı. En sık saptanan pnömatizasyon tipleri sağ pnömatizasyon için tip 1 (%50), sol (%59) ve bilateral (%40) pnömatizasyon için tip 2 pnömatizasyon idi. Sonuç: Kavernöz sinüs ve sellar bölgenin nörovasküler oluşumlarına yaklaşımlar sırasında anterior klinoid prosesin anatomik varyasyonları göz önünde bulundurulmalıdır.

Keywords

• Anterior Klinoid Proses
• Anterior Klinoidektomi
• Bilgisayarlı Tomografi
• Ölçüm
• Pnömotizasyon

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