This case report presents a case of Fanconi's Anemia with an unusual thumb polydactyly in a 2-year-old boy. The extra thumb had no nail, nail bed and distal phalanx. The extra thumb had no active motion. The duplication of the thumb occurred at the carpometacarpal joint but its morphology did not match with any classification described for thumb polydactyly. Although his thumb polydactyly was a...

The dermatoglyphs of 13 Japanese (eight males and five females) with duplication of the thumb were studied. The dermal patterns on the thumb were compared with those on the extra digit. A whorl on the thumb was associated with a whorl on the extra digit in two cases, a radial loop in four cases, and an arch in two cases. Where the thumb pattern was a loop the pattern on the extra digit was a lo...

Preaxial polydactyly is the most common duplication pattern in white and Asian populations (1). It is a congenital anomaly with a wide range of manifestations .Current classification do not have the capacity to classify all different types of radial polydactyly. We describe here a very rare and unusual case of bilateral preaxial polydactyly (triplication) in a woman and report the operations re...

preaxial polydactyly is the most common duplication pattern in white and asian populations (1). it is a congenital anomaly with a wide range of manifestations .current classification do not have the capacity to classify all different types of radial polydactyly. we describe here a very rare and unusual case of bilateral preaxial polydactyly (triplication) in a woman and report the operations re...

Triphalangeal thumb‑polysyndactyly syndrome (TPT‑PS) is an autosomal dominant disorder with complete penetrance and a variable expression consisting of opposable triphalangeal thumbs, duplication of the distal thumb phalanx, pre‑axial polydactyly and duplication of the big toes (hallux). The causative gene of TPT‑PS has been mapped to 7q36.3. Sonic hedgehog (SHH) expressed in the zone of polari...

BACKGROUND The Bilhaut-Cloquet operation is a combined surgical procedure for the treatment of a symmetric bifid thumb. Although this procedure can obtain a normal-sized thumb with a stable interphalangeal joint, it has limitations, such as the technical difficulty of combining all segments of a duplicated thumb, possible later physeal growth arrest, joint stiffness, and nail-plate deformity. W...

A rare association of triphalangeal thumbs and duplication of the big toes is described. The family pedigree confirms autosomal dominant inheritance with marked penetrance. A systematic approach to the diagnosis of this anomaly is presented. The distinction between the two types of triphalangeal thumb, true (opposable) and finger-like (non-opposable), is emphasised.