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Anatomical variability of the intertragal notch shape of the auricle in young men

Year: 2024, volume 20 Issue: №2 Pages: 208-214
Heading: Anatomy and anthropology Article type: Original article
Authors: Volosnik A.S., Voloshin V.N.
Organization: Saint Luka Lugansk State Medical University, Lugansk, Russia
Summary:

Objective: to determine the typological features of the intertragal notch (ITN) shape of the auricles (AU) in young men. Material and methods. After somatotyping and cephalotyping of 140 young men both right and left AU were photographed. 25 marks were applied on the images of AU along the margin of the ITN by digitizer tpsDig2 2.31. We performed a procedure for superposition of label configurations using the method of generalized Procrustean analysis using MorphoJ 1.06d soft. Procrustean coordinates were determined, characterizing the variability of the ITN shape of the right and left AU. A one-way AN OVA was carried out on the obtained data with the determination of Goodall's F-criterion, which was used to determine the strength of the influence of the cephalotype and somatotype of the young men on ITN shape both left and right AU. The significance level of the F-criterion is set at 0.05. To visualize the change in the shape of the ITN of AU of the corresponding side, the method of transformation grid was used. Results. As a result of ANOVA, a statistically significant influence of the somatotype of young men on ITN shape only in the left AU was established (F =1.98; p<0.0001). The significance level of the F-criterion in determining the strength of the influence of the cephalotype on ITN shape of both AU exceeded the critical value. As a result of discriminant analysis of ITN shape in groups of young men belonging to different morphotypes, models were obtained that allow for the correct classification of ITN. The classification accuracy of such models in some cases exceeds 90%. Conclusions. Variability in the form of ITN is more associated with the somatotype than with the cephalotype of young men. The shape of ITN differs in young men with different morphotypes.

Keywords: shape of intertragal notch, geometric morphometry, auricle

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