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Related to polydactylism: polydactyly, argyria, Supernumerary digit


The condition of having supernumerary fingers or toes.



the presence of extra digits on the hand or foot. The most common congenital developmental anomaly, polydactyly includes such anomalies as doubling of the ungual phalanx or the presence of small digitiform cutaneous appendages. It occurs most commonly in the form of six digits, usually located on a single extremity; no more than 12 or 13 digits on one extremity have been observed. The extra digit is usually located on the inner or outer margin of the hand, and the majority of extra digits are underdeveloped. Polydactyly is corrected surgically.

References in periodicals archive ?
According to the proud daddy, his family had a history of polydactylism and he himself had the non-functioning nubs of sixth fingers removed as a child.
Although supernumerary digits appeared normally developed and functional, others have observed skeletal, arterial, or muscular abnormalities in polydactylism cases for humans (Nelson, 1963; Hootnick et al.
In humans, polydactylism is hereditary; however, it is not expressed in all offspring (i.
In 2003, the top one was NTDs, followed by polydactylism, congenital hydrocephalus, cleft lip with cleft palate, simple cleft lip, and CHD.