Computed tomography analysis of the anterior ethmoid genu of the frontal recess in non-diseased sinuses

Raman, K. and Govindaraju, Revadi and James, K. and Abu Bakar, Mohd Zulkiflee and Patil, N. and Shah, Mohammad Nazri Md (2023) Computed tomography analysis of the anterior ethmoid genu of the frontal recess in non-diseased sinuses. The Journal of Laryngology & Otology, 137 (2). pp. 169-173. ISSN 0022-2151, DOI

Full text not available from this repository.


Objective Knowledge of anatomical variations of the frontal recess and frontal sinus and recognition of endoscopic landmarks are vital for safe and effective endoscopic sinus surgery. This study revisited an anatomical landmark in the frontal recess that could serve as a guide to the frontal sinus. Method Prevalence of the anterior ethmoid genu, its morphology and its relationship with the frontal sinus drainage pathway was assessed. Computed tomography scans with multiplanar reconstruction were used to study non-diseased sinonasal complexes. Results The anterior ethmoidal genu was present in all 102 anatomical sides studied, independent of age, gender and race. Its position was within the frontal sinus drainage pathway, and the drainage pathway was medial to it in 98 of 102 cases. The anterior ethmoidal genu sometimes extended laterally and formed a recess bounded by the lamina papyracea laterally, by the uncinate process anteriorly and by the bulla ethmoidalis posteriorly. Distance of the anterior ethmoidal genu to frontal ostia can be determined by the height of the posterior wall of the agger nasi cell rather than its volume or other dimensions. Conclusion This study confirmed that the anterior ethmoidal genu is a constant anatomical structure positioned within frontal sinus drainage pathway. The description of anterior ethmoidal genu found in this study explained the anatomical connection between the agger nasi cell, uncinate process and bulla ethmoidalis and its structural organisation.

Item Type: Article
Uncontrolled Keywords: Frontal Sinus; Frontal Recess; Frontal Sinus Drainage; Uncinate Process; Bulla Ethmoidalis; Endoscopic Sinus Surgery
Subjects: R Medicine > RF Otorhinolaryngology
Divisions: Faculty of Medicine > Biomedical Imaging Department
Faculty of Medicine > Otorhinolaryngology Department
Depositing User: Ms Zaharah Ramly
Date Deposited: 13 Jul 2023 08:04
Last Modified: 13 Jul 2023 08:04

Actions (login required)

View Item View Item