Short 5th finger (HP_0009237) is hypoplasia (congenital reduction in size) of the fifth finger, also known as the little finger. Also known as: Fifth finger brachydactyly, Hypoplastic phalanges of the little finger, Hypoplastic/small 5th finger, Hypoplastic/small little finger, Short fifth finger, Short fifth fingers, Short little finger, Short phalanges of the little finger.