Three-dimensional structure of the basal lamella of the middle turbinate

Eördögh M, Baksa G, Grimm A, Barany L, Petneházy Ö, Reisch R, Schroeder HW, Briner HR, Hosemann W (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Scientific Reports Nature Publishing Group: Open Access Journals - Option B

Book Volume: 11

Article Number: 17960

Journal Issue: 1

DOI: 10.1038/s41598-021-97331-2

Abstract

The middle turbinate’s basal lamella (3BL) is a variable landmark which needs to be understood in endoscopic transnasal skull base surgery. It comprises an anterior frontal and a posterior horizontal part and appears in its simplest depiction to be “L”-shaped, when viewed laterally. In this study we analyzed its 3D morphology and variations focusing on a precise and systematic description of the anatomy. CBCTs of 25 adults, 19 cadavers and 6 skulls (total: 100 sides) were investigated with the 3DSlicer software, creating 3D models of the 3BL. We introduced a novel geometrical classification of the 3BL’s shape, based on segments. We analyzed their parameters and relationship to neighboring structures. When viewed laterally, there was no consistent “L”-shaped appearance of the 3BL, as it is frequently quoted. A classification of 9 segment types was used to describe the 3BL. The 3BLs had in average of 2.95 ± 0.70 segments (median: 3), the most frequent was the horizontal plate (23.05% of all segments), next a concave/convex plate (22.71%), then a sigma plate (22.37%). Further types were rare. We identified a horizontal plate in 68% of all lateral views whilst 32% of the 3BLs were vertical. A sigma–concave/convex–horizontal trisegmental 3BL was the most common phenotype (27%). Globally, the sigma–concave/convex pattern was present in 42%. The 3BL adhered the ethmoidal bulla in 87%. The segmenting method is eligible to describe the 3BL’s sophisticated morphology.

Authors with CRIS profile

Laszlo Barany Department of Neurosurgery

Involved external institutions

Universitätsmedizin Greifswald / Universitätsklinikum Greifswald DE Germany (DE) Semmelweis University / Semmelweis Egyetem HU Hungary (HU) Endomin – Zentrum für Endoskopische und Minimal Invasive Neurochirurgie CH Switzerland (CH) JustAnatomy Ltd HU Hungary (HU)

How to cite

APA:

Eördögh, M., Baksa, G., Grimm, A., Barany, L., Petneházy, Ö., Reisch, R.,... Hosemann, W. (2021). Three-dimensional structure of the basal lamella of the middle turbinate. Scientific Reports, 11(1). https://dx.doi.org/10.1038/s41598-021-97331-2

MLA:

Eördögh, Márton, et al. "Three-dimensional structure of the basal lamella of the middle turbinate." Scientific Reports 11.1 (2021).

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