Polysyndactyly

Definition

Polysyndactyly is a form of preaxial polydactyly of fingers characterised by the presence of a thumb showing the mildest degree of duplication, being broad, bifid or with radially deviated distal phalanx. Syndactyly of various degrees of third-and-fourth fingers is occasionally present. Two forms have been characterised: unilateral and bilateral.

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