Брахідактилія, тип В1

Визначення(English summary)

A rare subtype of brachydactyly type B characterized by hypoplasia or aplasia of the distal phalanges of digits 2-5 with or without nail dysplasia, in association with fusion of the middle and distal phalanges, a broad or bifid thumb, and occasionally distal and proximal symphalangism or syndactyly. The feet are less severely affected than the hands.