Morphometric Evaluation of the Lacrimal Sac Fossa in Anatolian Population Using Multidetector Computed Tomography

Abstract

Background: To investigate the morphometric characteristics of the lacrimal sac fossa in Anatolian population using multidetector computed tomography (MDCT) images in surgical aspect.
Materials and Methods: A total of 77 cranial MDCT scans were evaluated. The dimensions of the maxillary and the lacrimal bones forming the lacrimal sac fossa were measured in 3 axial planes (up-per, middle, and lower planes).
Results: The mean maximum thickness of the maxillary bone at the upper, middle and lower planes were: 3.58 mm, 4.27 mm, and 5.81 mm; the mean midpoint thickness at each plane were: 2.76 mm, 2.51 mm, and 1.48 mm; the mean lacrimal bone thickness at each plane were: 0.72 mm, 0.65 mm, and 0.66 mm; the mean distance between anterior and posterior lacrimal crests at each plane were: 5.96 mm, 8.1 mm, and 4.63 mm; the mean angle between the lacrimal bone and the sagittal plane in males and females at the middle plane were: 132.73° and 131.46°; the mean length of the lacrimal sac fossa in males and females were: 15.82 mm and 14.02 mm.
Conclusions: In Anatolian population, bone thicknesses of the lacrimal sac fossa were higher in ma-les, while the angle between the lacrimal bone and the sagittal plane was higher in females. This study indicated that osteotomies, which are the main target of dacryocystorhinostomy (DCR) inter-ventions, can be easily performed in the Anatolian population.

Keywords

• Dacryocystorhinostomy
• maxilla
• morphometry
• multidetector computed tomography
• nasolacrimal duct

Anadolu Toplumunda Fossa Sacci Lacrimalis’in Multi-Dedektör Bilgisayarlı Tomografi Kullanarak Morfometrik Açıdan Değerlendirilmesi

Abstract

Amaç: Anadolu toplumunda, fossa sacci lacrimalis’in morfometrik özelliklerini cerrahi açıdan mul-tidedektör bilgisayarlı tomografi (MDBT) görüntüleri kullanarak araştırmak.
Materyal ve Metod: Toplam 77 kranial MDBT taraması değerlendirildi. Fossa sacci lacrimalis’i oluştu-ran maxilla ve os lacrimale’ye ait kemik kısımlarının boyutları 3 aksiyal düzlemde (üst, orta ve alt düzlem) ölçüldü.
Bulgular: Üst, orta ve alt düzlemlerde maxilla’nın ortalama maksimum kalınlığı: 3,58 mm, 4,27 mm ve 5,81 mm; tüm düzlemlerde ortalama orta nokta kalınlığı: 2,76 mm, 2,51 mm ve 1,48 mm; tüm düzlem-lerde ortalama os lacrimale kalınlığı: 0,72 mm, 0,65 mm ve 0,66 mm; tüm düzlemlerde crista lacrimalis anterior maxillae ve crista lacrimalis posterior arasındaki ortalama mesafe: 5,96 mm, 8,1 mm ve 4,63 mm; orta düzlemde erkek ve kadınlarda os lacrimale ile sagital düzlem arasındaki ortalama açı: 132.73° ve 131.46°; erkek ve kadınlarda fossa sacci lacrimalis’in ortalama uzunluğu: 15.82 mm ve 14.02 mm olarak ölçüldü.
Sonuç: Anadolu toplumunda fossa sacci lacrimalis’in kemik kalınlıkları erkeklerde daha yüksek iken, os lacrimale ile sagital düzlem arasındaki açı kadınlarda daha yüksek bulundu. Bu çalışma, dakriyosis-torinostomi (DSR) girişimlerinin ana hedefi olan osteotomilerin Anadolu toplumunda kolaylıkla yapı-labileceğini göstermiştir

Keywords

• Dakriyosistorinostomi
• maxilla
• morfometri
• multidedektör bilgisayarlı tomografi
• nazolakrimal kanal

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