Triphalangeal thumb is characterized by the interposition of an extra-phalanx between two normal ones. In this article the authors present the case of a 24-year-old man with bilateral triphalangeal thumb of opposable type, without any other associated anomaly or genetic syndrome. The patient had triangular delta extra-phalanxes that caused ulnar deviation of both thumbs. Surgical procedure for ...

A case of a mentally retarded male patient with associated physical abnormalities resembling the multiple exostoses-mental retardation syndrome (MEMR, Langer-Giedion or Ale-Calo syndrome) is reported. The patient represents one of the most severe examples of this condition; he also has a triphalangeal thumb with double distal phalanges, a feature not reported previously.

This article was accepted fur publication September 26, 1991. Behavioral research has indicated that thumbsucking often covaries with hair pulling and that the elimination of thumb-sucking can result in the elimination of the hair pulling with which it was associated (e.g., Frlman & Hove, 1987; Knell & Moore, 1988). Treatments for persistent thumb-sucking, however, have shown minimal or transie...

its comparative rarity may be indicated by the fact that in a review of the literature for the ensuing fifty-two years (Stieve 1916) only thirty-nine cases were collected. Lapidus, Guidotti and Coletti (1943) discovered six cases while examining 75,000 men drafted to an American Army centre. These workers quoted a statement by Dr M. Pomeranz. radiologist of the Hospital for Joint Diseases in Ne...

BACKGROUND The purpose of this study was to present a novel surgical technique using an on-top osteotomy and to assess the clinical and radiographic outcomes for the triphalangeal Wassel type VI thumb duplication patients. METHODS The surgical technique involves ablation of the radial thumb at distal one-third of the metacarpal, corresponding metacarpal osteotomy of the ulnar thumb, with amal...

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...

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...