Ethno-territorial features of some osteometric parameters of the proximal phalanges of the hand in male children and adolescents in Tajikistan and Western India

The aim of the study is to establish ethno-territorial differences in the linear parameters of the proximal phalanges of the fingers in children and adolescents of the male sex of Tajikistan and Western India, regression equations that allow determining the nature of the dependence of the age of the examined and linear sizes of phalanges. On 366 radiographs of the right hand in children and adolescents aged 6-17 years from Tajikistan and India (Mumbai), the length of the proximal phalanges and the width of their diaphysis were measured. To determine the relationship between the age and the length, as well as the width of the diaphysis, Spearman's nonparametric correlation coefficient was used, because the age distribution does not correspond to normal. One-way ANOVA demonstrates the statistical significance of the increase in the length and width of the diaphysis of the proximal phalanges in boys and young men of Tajikistan and India with age, but the growth of these bones is uneven. For both Tajik and Indian boys, the closest correlation with age was found for the length of the second finger phalanx. It was found that in children in the smallest regions compared, the correlation was determined between their age and the length of the phalanx of the fifth finger. The length of the phalanx of the third finger increased most significantly with age in boys of the compared ethnic groups. The smallest height in length was determined for the phalanx of the fifth finger in boys in India and for the phalanx of the first finger in adolescents in Tajikistan. The maximum growth of the diaphysis in width was observed in the phalanx of the second finger, the smallest in the phalanges of the first and fifth fingers. The highest reliability was found with the length of the phalanx of the second finger. For Tajik boys, the parameters of the length of the phalanges of the III and IV fingers also have a correlation coefficient, therefore, they can be used to identify their age.