Morphology of the olfactory fossa – A new look

Jacob, Tony George; Kaul, Jagat Mohini

doi:10.1016/j.jasi.2014.04.006

Cited by 14 publications

(19 citation statements)

References 28 publications

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“…The mean depth in the studies by Jacob et al and Salroo et al was 5.08 and 4.9 mm, respectively. [313] Analysis of OF depth with respect to gender showed statistically significant difference in our study with males and females having a mean depth of 5.33 and 5.17 mm, respectively [Table 1]. Similarly, Salroo et al also observed significant difference in the OF depth between males and females.…”

Section: Discussionsupporting

confidence: 67%

“…Jacob et al also observed no significant difference in OF depth between the sides. [3] Conversely, the study by Salroo et al showed significant difference between the sides. [13] A study by Pawar et al also showed statistically significant difference in OF depth between the right and left sides but only in males.…”

Section: Discussionmentioning

confidence: 98%

“…There is paucity of in-depth studies regarding OF analysis in the Indian scenario, barring a few which are mentioned below. Previously, Salroo et al [13] (200 subjects), Pawar et al [14] (200 subjects), Satish Nair[15] (180 subjects), Ali et al [16] (75 subjects), Gupta et al [17] (100 subjects), and Jacob et al [3] (32 cadaveric skulls) had done OF analysis among Indian population from various states, but the sample sizes were limited and asymmetry analysis was incomplete in most. In our study, we have tried to focus on the distribution of Keros types and various asymmetry parameters in detail and is more comprehensive than the previous Indian studies.…”

Section: Discussionmentioning

confidence: 99%

“…OF is bounded laterally by the lateral lamella of cribriform plate and medially by crista galli. [3] It contains the olfactory bulbs and tracts. The lateral lamella is the thinnest bone in the anterior skull base.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, Keros type III is called dangerous ethmoid. [39] There is high chance of penetration through the LLCP. Asymmetry in the OF depth or the height of ethmoidal roof [Figure 4] is also associated with higher risk of intracranial penetration during surgeries such as FESS.…”

Section: Introductionmentioning

confidence: 99%

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Olfactory fossa depth: CT analysis of 1200 patients

Babu

Nair

Kuriakose

2018

Indian Journal of Radiology and Imaging

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Background:Olfactory fossa (OF) is a depression in anterior cranial cavity whose floor is formed by cribriform plate of ethmoid. Lateral lamella, which forms its lateral boundary, is a thin plate of bone and is at risk of injury during functional endoscopic sinus surgery, especially when fossa is deep/asymmetric.Aims:To measure the variations in the depth of OF and categorize Kerala population as per Keros classification using computed tomography (CT).Settings and Design:This study was conducted in our institution from January 2016 to August 2017. Patients >16 years of age undergoing CT scan of paranasal sinuses (PNS) were included.Materials and Methods:Coronal PNS CT scan studies of 1200 patients were reviewed. The depth of OF was measured from vertical height of lateral lamella.Statistical Methods:Results were analyzed according to gender and laterality using independent sample t-test and Chi-square test.Results:The mean depth of OF was 5.26 ± 1.69 mm. Statistically significant difference was seen in the mean depth of OF between males and females but not between right and left sides. Keros type I was found on 420 sides (17.5%), type II in 1790 (74.6%), and type III on 190 sides (7.9%). Type III Keros was more on the right (9%) than left (6.8%) side, more in males (9.5%) than females (5.9%), and more among males on the right side (11.4%). Asymmetry in OF depth between two sides was seen in 75% of subjects.Conclusion:Prevalence of the dangerous type III OF, even though low, is significant especially among males and on the right side. Therefore, preoperative assessment of OF depth must be done to reduce iatrogenic complications.

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Section: Discussionsupporting

confidence: 67%

Section: Discussionmentioning

confidence: 98%