This article is about the congenital anomaly. For the paleontological application, see Polydactyly in early tetrapods.
Medical condition
Polydactyly
Other names
Hyperdactyly
A left hand with postaxial polydactyly
Specialty
Medical genetics
Usual onset
During pregnancy
Duration
Lifelong unless surgically removed
Treatment
Surgery in some cases
Deaths
None
Polydactyly or polydactylism (from Greek πολύς (polys) 'many', and δάκτυλος (daktylos) 'finger'),[1] also known as hyperdactyly, is an anomaly in humans and animals resulting in supernumerary fingers and/or toes.[2] Polydactyly is the opposite of oligodactyly (fewer fingers or toes).
^"Polydactyly Etymology". Online Etymology Dictionary. Archived from the original on October 9, 2016. Retrieved February 13, 2016.
^Kaneshiro, Neil K. "Polydactyly – Overview". University of Maryland Medical Center (UMMC). Archived from the original on 30 October 2012. Retrieved 5 January 2013.
births in Africans. Ulnar polydactyly is also often part of a syndrome. In patients with African ancestry ulnar polydactyly mostly occurs isolated, whereas...
England and Wales. Polydactyly is a congenital abnormality that can be inherited in an autosomal dominant manner. Some cases of polydactyly are caused by mutations...
prior to hatching. The genetic cause behind Silkie polydactyly differs from those that cause polydactyly in the Dorking chicken breed, which is due to ectopic...
varnish slowly develops. Many of the petroglyphs appear to be depicting polydactyly, the condition of having an extra toe or finger. In other Puebloan sites...
normally pentadactyl animal. Polydactyly is very common among domestic cats. For more information, see polydactyly. Polydactyly in early tetrapod aquatic...
in the soft tissue of the pelvic region Polycephaly – an extra head Polydactyly – additional fingers or toes Polymelia – an extra arm or leg Polyorchidism...
obesity, syndactyly, and polydactyly. Acrocephalopolysyndactyly is a variation of acrocephalosyndactyly that presents with polydactyly. It was first characterized...
Microcephaly (from Neo-Latin microcephalia, from Ancient Greek μικρός mikrós "small" and κεφαλή kephalé "head") is a medical condition involving a smaller-than-normal...
not encouraged for breeding. Polydactyly in Maine Coon cats is characterised by broad phenotypic diversity. Polydactyly not only affects digit number...
normal digit being connected/webbed (syndactyly) to an extra digit (polydactyly). Polyonychia can also be acquired, such as after an accident that affected...
used while jumping. Some cat breeds are prone to having extra digits ("polydactyly"). Polydactylous cats occur along North America's northeast coast and...
polymetatarsia not associated with polydactyly have been reported. Troetsch, Roman Bernal. "Polymetatarsia without polydactyly | Radiology Case | Radiopaedia...
deficiency, and additional length. There is often a combination with radial polydactyly. Generally, triphalangeal thumbs are non-opposable. In contrast to most...
on each foot. When more than five toes are present, this is known as polydactyly. Other variants may include syndactyly or arachnodactyly. Forefoot shape...
Ectrodactyly-Fibular Aplasia/Hypoplasia (EFA) syndrome, and Ectrodactyly-Polydactyly. More than 50 syndromes and associations involving ectrodactyly are distinguished...
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