THE GEOMETRIC MORPHOMETRY RESULTS: THE HAND SHAPE AND BODY TYPE DO NONDEPENDENT

A widely accepted concept in human anatomy is the well-known thesis that the anatomical shape and sizes of various organs and body parts are determined by and interrelated with the constitutional features of bone, fat and muscle tissue development or body type. To prove this, measurements of conventional linear metric values ​​of a particular organ are widely used, and on the basis of their correlations with the body type, well-known conclusions are made. The hand is no exception, and standard anthropometric methods for studying the morphology of the hand depending on the body type are widely used. However, traditional anthropometry, based only on conventional linear measurements, allows only an indirect assessment of the shape of the hand, leaving the analysis of its spatial geometric shape beyond complete objectivity. In this study, we studied the relationship between the shape of the hand and the body type in 53 men and 47 women using geometric morphometry methods. It was found that the variability of the hand shape in the coordinates of the transverse axis (narrow - wide) is associated with its morphological type regardless of sex, and in the coordinates of the longitudinal axis (long - short) with its overall size. Only minor differences were found between the hand shape in male endomorphs and ectomorphs (Mahalonobis distance 1,848, p<0,05). In women, differences between hand shapes depending on the body totype are not detected and are weakly expressed only for endomorphs and mesomorphs (Mahalonobis distance 0,415, p<0,05). Multiple regression shows that differences in hand shape in individuals with different body types are insignificant and do not depend on sex. Thus, the results of geometric morphometry, which most fully and objectively characterize the hand shape in humans, indicate that the anatomical forms of hand variability and the frequency of their occurrence in humans do not depend on the body type.

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