[Forensic sex diagnosis of an adult on the features of arytenoid cartilage]. / Sudebno-meditsinskaya diagnostika polovoi prinadlezhnosti vzroslogo cheloveka po priznakam morfometrii cherpalovidnykh khryashchei.

The algorithm of forensic medical examination depending on the features of arytenoid cartilage (AC) is presented in this article. The result of the proposed algorithm is the maintenance of accuracy and validity of sex diagnostic by the step-by-step method application of one-dimensional (ODA) and multidimensional (MDA) discriminant analysis. The method involves fixation of the values of left-hand and right-hand arytenoid cartilages features: distance from the apex to the muscular process, distance from the apex to the vocal tubercle, distance between the muscular and vocal tubercles, breadth of the facies articularis, surface and mass of either left-handed and right-handed arytenoid cartilages separately, or their sums. The application of one-dimensional discriminant analysis allows to determine the categories of features on a 5-point scale and to get 3 forms of conclusions depending on the proposed decision rule: a reliable solution (the problem is solved), probable solution (additional research is needed) and uncertain solution (cancellation of decision). The discriminant functions are additionally calculated for the models of multidimensional discriminant analysis separately for men and women in case of probable solution. The comparison of them determines the choice of sex and the form of expert conclusions.

[Sexual dimorphism of morphometric parameters of arytenoid cartilages as a criterion for establishing human sex]. / Polovoi dimorfizm morfometricheskikh priznakov cherpalovidnykh khryashchei kak kriterii ustanovleniya pola cheloveka.

The objective of the study is to determine sexual dimorphism of morphometric features of adult arytenoid cartilages (AC) as applied to forensic medical examination of personality identification. The SC of 254 males and 106 females who died of mechanical strangulation asphyxia between the ages of 19 and 91 years were studied using the set of 14 parameters. All the parameters have a normal distribution according to Pearson's χ2 test. Their means were significantly higher in men than in women. Sex differences in the coefficients of variation of the parameters are insignificant. All AC parameters correlate closely with sex (r=0.775-0.830), but there is almost no correlation with age and body length. The same dimensions of the right and left AC have a high correlation (r=0.8-0.9) and are subject to separate analysis. The morphometric parameters of AC are highly informative and present a valuable option for a forensic determination of the sex of an adult human.