Radiogrammetric Study on the Allometry of Human Digits

Abstract

The new idea of "complete isometry" was introduced to study the intercorrelation of the allometric growth of the human pentadactylism. Complete isometry is obtained from both primary and inverse allometric functions and means that two characters studied grow, in a statistical sense, at a completely proportional pace It was manifested that the growth pattern of human digits was grouped into axial and marginal, and the group of the marginal digits grew at a more positive allometric pace than that of axial digits. The biological law of axo-marginal growth gradient was clarified in the human pentadactylate hand.