Revisiting the Morphometry of Cricoid Cartilage and Vocal Folds

Öz

Background: Rima glottidis and cricoid cartilage are important parts for laryngeal passage. However, their complex anatomical organizations give rise to occur some difficulties during intubation or surgeries. Therefore, these anatomical structures have great risk of damage during these procedures. The main aim of this study is to evaluate detailed morphometric properties of these critical parts of the larynx.

Methods: In this study, 74 female and 76 male patients’, without any pathology in their laryngeal and neck regions, computed tomography images were examined, retrospectively. Anteroposterior diameter of the supraglottic region immediately above the vocal folds, anterior angle of the vocal folds, transverse diameter of the rima glottidis and anteroposterior and transverse diameters of the cricoid cartilage were measured using Osirix-Lite version 9.

Results: Transverse diameter of the cricoid cartilage was found less than 1 cm, however, the transverse diameter of the rima glottidis was significantly smaller. All variables except for anterior angle of the vocal folds were higher in men than women.

Conclusions: The transverse diameter of the rima glottidis was the narrowest part of the laryngeal passage. The physicians should be aware of this part of the larynx besides the cricoid cartilage during endotracheal tube administrations.  

 

Keywords: Adult airway, computed tomography imaging, cricoid cartilage, larynx, vocal folds.

Anahtar Kelimeler

• Adult airway,computed tomography imaging,cricoid cartilage,larynx

Plica vocalis ve cartilago cricoidea morfometrelerinin yeniden değerlendirilmesi

Öz

Amaç: Rima glottidis ve cartilago cricoidea larynx geçişinin önemli kısımlarıdır. Bununla birlikte, karmaşık anatomik yapılar olmaları sebebiyle entübasyon veya cerrahi sırasında bazı güçlüklere yol açabilirler. Bu sebeple, bu işlemler sırasında, bu anatomik yapılar, istenmeyen yaralanmalar açısından oldukça büyük bir risk altındadırlar. Çalışmamızın amacı, larynx’in bu önemli parçalarının morfometrelerinin detaylı olarak incelenmesidir.

Materyal ve Metod: Bu çalışmada, larynx ve boyun bölgelerinde herhangi bir patoloji olmayan 74 kadın ve 76 erkek hastaya ait bilgisayarlı tomografi görüntüleri retrospektif olarak incelendi. Plica vocalis’in hemen üzerinde kalan supraglottic bölgenin anteroposterior çapı, plica vocalis’lerin anterior birleşme açısı, rima glottidis’in transvers çapı ve cartilago cricoidea’nın anteroposterior ve transvers çapları Osirix-Lite version 9 yazılımı kullanılarak ölçüldü.

Bulgular: Cartilago cricoidea’nın transvers çapı 1 cm'den az bulundu, ancak rima glottidis'in transvers çapı cartilago cricoidea’nın transvers çapından anlamlı derecede daha küçüktü. Plica vocalis’in anterior açısı dışındaki tüm değişkenler erkeklerde kadınlardan daha yüksekti.

Sonuç: Rima glottidis’in transvers çapı larynx geçişinin en dar kısmıydı. Endotrakeal tüp uygulamaları sırasında, uygulamayı yapacak olan hekimler cartilago cricoidea’nın yanı sıra larynx’in bu kısmının da farkında olmalıdır.

 

Anahtar Kelimeler: Erişkin solunum yolları, bilgisayarlı tomografi, cartilago cricoidea, larynx, plica vocalis.

Anahtar Kelimeler

• Erişkin solunum yolları,bilgisayarlı tomografi,cartilago cricoidea,larynx,plica vocalis

Kaynakça

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