The Journal of laryngology and otology · 2026
Sinus pneumatisation and Keros type as predictors of anterior ethmoidal artery configuration: a 3D-reconstructed computed tomography analysis.
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Im Yeon Hee, Hong Yujeong, Kim Dong Jun, Jun Beom Cho
Аннотация
OBJECTIVE: This study aimed to examine anatomical factors predicting anterior ethmoidal artery type.
METHODS: Paranasal sinus computed tomography images from adult patients were reviewed. Anterior ethmoidal artery types were categorised based on skull base relationship: type A (embedded within skull base), type B (in a protruding canal) and type C (separated from skull base). Statistical analyses encompassed inter-type comparisons, multinomial logistic regression and correlation analysis.
RESULTS: Anterior ethmoidal artery types differed significantly in lateral lamella height and Keros classification, with type C showing the greatest lateral lamella height and predominant Keros III. Type C was additionally characterised by enlarged frontal sinus volume, increased volume and height of frontal recess anterior cells and higher supraorbital ethmoid cell prevalence. The anterior ethmoidal artery-skull base distance demonstrated significantly positive correlations with lateral lamella height, frontal sinus volume and the volume and height of frontal recess anterior cells.
CONCLUSION: More extensive pneumatisation of frontal sinus and ethmoid cells and increased lateral lamella height might predict a free-running anterior ethmoidal artery.
METHODS: Paranasal sinus computed tomography images from adult patients were reviewed. Anterior ethmoidal artery types were categorised based on skull base relationship: type A (embedded within skull base), type B (in a protruding canal) and type C (separated from skull base). Statistical analyses encompassed inter-type comparisons, multinomial logistic regression and correlation analysis.
RESULTS: Anterior ethmoidal artery types differed significantly in lateral lamella height and Keros classification, with type C showing the greatest lateral lamella height and predominant Keros III. Type C was additionally characterised by enlarged frontal sinus volume, increased volume and height of frontal recess anterior cells and higher supraorbital ethmoid cell prevalence. The anterior ethmoidal artery-skull base distance demonstrated significantly positive correlations with lateral lamella height, frontal sinus volume and the volume and height of frontal recess anterior cells.
CONCLUSION: More extensive pneumatisation of frontal sinus and ethmoid cells and increased lateral lamella height might predict a free-running anterior ethmoidal artery.