Polydactyly of a triphalangeal thumb

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Polydactyly of a triphalangeal thumb

Synonyms: PPD2 | Preaxial polydactyly type 2

Polydactyly of a triphalangeal thumb or PPD2 is a form of preaxial polydactyly of fingers (see this term) a limb malformation syndrome that is characterized by the presence of a usually opposable triphalangeal thumb with or without additional duplication of one or more skeletal components of the thumb. The thumb appearance can differ widely in shape (wedge to rectangular) or it can be deviated in the radio-ulnar plane (clinodactyly). PPD2 is also associated with systemic syndromes including Holt-Oram syndrome and Fanconi anemia (see these terms).

Data from Orphanet are used to provide information on a disease's name, synonym(s), and overview.

Reference: Access aggregated data from Orphanet at Orphadata.

Orphadata: Free access data from Orphanet. © INSERM 1999. Available on http://www.orphadata.org. Data version March 2024

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