Teratological variants of congenital triphalangism of the 1st finger in children

Abstract

ased on examination of 56 patients, aged 8 months - 16 years, heterogeneity of congenital thumb three-phalangism was detected. Two forms of that pathology were defined: simple form (bra-chymesophalangeal, pseudothreephalangism, dolichophalangeal) and complex form (three-phalangism with combination of 1st radius hypoplasia and with combination of radial Polydactyly). The main radiologic criteria to delimit one form from the other one are the following: longitudinal and transverse sizes of 1st metacarpal bone; location of 1st metacarpal bone epiphysis; sizes and shape of additional phalangx; longitudinal size of 1st radius: volume of 1st intermetacarpal interval. Detection of malformation type is of importance for the choice of treatment tactics