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The condition characterized by union of two or more digits, as in certain birds and mammals; it is a familial anomaly in humans.



in humans, a congenital deformation of the hand or foot characterized by the adhesion of two or more digits; a type of developmental anomaly.

Different types of syndactyly are distinguished, depending on the extent of adhesion. With complete syndactyly the connection extends along the entire length of the digits, and with partial syndactyly the connection is limited to the base of the involved digits. Membranous syndactyly is most commonly partial and is manifested by the appearance of a thin, cutaneous membrane at the base of the digits. With simple syndactyly the digits are connected along their entire length by a thick, cutaneous intersection, and with complicated syndactyly the digital bones are fused. The most serious form is terminal syndactyly, which is characterized by the adhesion of only the tips of the digits. This condition is accompanied by the severe deformation of the digits and the loss of their function.

Syndactyly is treated surgically.

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References in periodicals archive ?
Chadi et al., "Identification of a doublet missense substitution in the bovine LRP4 gene as a candidate causal mutation for syndactyly in Holstein cattle," Genomics, vol.
The most common congenital anomaly found in our study was polydactyly (20 cases), followed by syndactyly (8 cases).
Type III syndactyly involving all digits on both hands and feet was present (Picture 1).
It was, however, the combination of the 3-4 syndactyly in a growth-restricted infant with a neural tube defect that prompted the consideration of triploidy as the diagnosis.
In digits, syndactyly and degenerated claws were found and clubbed feet.
She also had partial syndactyly of second and third toes, left sided ectropion, reduced intervertebral disc spaces and a spondylolisthesis at lumbosacral level.
What they observed was that there were a partial syndactyly, thymic hyperplasia, growth retardation, and serious malformations in craniofacial structure.
Clinically it may present as a minor digital abnormality or limb malformation, with syndactyly or clubfoot, but also as autoamputation and catastrophic craniofacial deformities [8, 9].
Katherine and her husband, Keith, wanted a funeral for Grace, who was diagnosed after her death with Cenani-Lenz syndactyly syndrome, a genetic disorder that causes severe bone malformation.
An X-linked inheritance pattern, rib malformations, nail hypoplasia, syndactyly of the second and third fingers and supernumerary nipples are indicative of a diagnosis of SGBS rather than BWS.
A hatch-year Swainson's hawk (Buteo swainsoni) recovered from Modoc County, California, USA, on August 12, 2012, had malformations of the rear limbs consisting of bilateral polymelia and syndactyly. We describe the malformations and evaluate potential causes.
Syndactyly is a congenital malformation in which two or more fingers are joined because they fail to separate or fuse during limb development.