An Analysis of Configuration of Lateral Lamella of Cribriform Plate of Ethmoid: A Computed Tomographic Study
Background: Ethmoid Skull Base (ESB) is an articulation of ethmoid roof with Lateral Lamella of Cribriform plate (LLCP). An increased LLCP height was observed to increase the vulnerability of ESB to surgical injuries. Aim and Objectives: The present study was undertaken to analyze the configura...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Krishna Vishwa Vidyapeeth (Deemed to be University), Karad
2020-07-01
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| Series: | Journal of Krishna Institute of Medical Sciences University |
| Subjects: | |
| Online Access: | https://www.jkimsu.com/jkimsu-vol9no3/JKIMSU,%20Vol.%209,%20No.%203,%20July-September%202020%20Page%2048-55.pdf |
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| Summary: | Background: Ethmoid Skull Base (ESB) is an
articulation of ethmoid roof with Lateral Lamella of
Cribriform plate (LLCP). An increased LLCP height
was observed to increase the vulnerability of ESB to
surgical injuries. Aim and Objectives: The present study
was undertaken to analyze the configuration of the
lateral lamella of cribriform plate, the ethmoid roof with
respect to Keros type of olfactory fossa. Material and
Methods: A retrospective Computed Tomographic (CT)
study was done with 60 Coronal Paranasal Sinuses
(PNS) scans and LLCP height was determined by
subtracting Medial Ethmoid Roof Point (MERP) from
CP heights and classified according to Keros. The
difference between Medial Ethmoid Roof Point
(MERP) and Lateral Ethmoid Roof Point (LERP)
heights in both anterior and posterior planes indicates
the direction of ethmoid roof slope. Results: The
average height of the LLCP was between 1.53 to 8.55
mm with a mean (SD) of 3.77 mm 1.66 and majority
belonged to Keros type I. Overall mean difference
between LERP and MERP was 5.43 ± 0.74 mm in
anterior and 4.43 0.63 mm in posterior planes. In both
the planes irrespective of the sides the height of the
LERP was higher in relation to medial side. Conclusion:
Keros type I was the most common type and the slope of
anterior ethmoid roof is steeper compared to posterior.
This preoperative knowledge about the configuration of
LLCP as well as the ethmoid roof contour is vital during
endonasal ethmoidal surgeries |
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| ISSN: | 2231-4261 2231-4261 |