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Anjali Patel

on 21 January 2011

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Transcript of Polydactyl

Polydactyly Etymology: Greek polydaktylos, from "polys" (many) + "dactylos" (fingers or digits) : also known as hyperdactyly, is a congenital physical anomaly in humans having supernumerary fingers or toes (extra thumb, small finger,or, less commonly an extra Different Types of Polydactyly Radical, or Preaxial Polydactyly Unar, or postaxial polydactyly extra thumb extra small finger Central Polydactyly between thumb and small finger Causes of Polydactyly and its Symptoms When hands and feet are developing
in the womb, they start out as
flat "paddles"that then normally
separate into five digits. Polydactyl occurs when this sepration
process is excessive and an extra segment is created. If untreated, some forms of Polydactyly
can progress to a point where they begin to impact other areas in the body. Who gets Polydactyly? any newborn infant
(does not casue any pain) Postaxial Polydactyly:

small, poorly formed extra
digit is ten times more
common in African Americans
than in Caucasians. inherited as an autosomal
dominant trait (there is a
50% chance) Polyaxial Polydactyly:

common in all ethnicities How is Polydactyly inherited? cause can be mutation in a variety of genes can occur by itself and this is when it's not a trait with multiple factor mutated genes are involved in
developmental patterning and a
condition of inherited anomalies result condition has an incidence of 1 in every 500 lives Syndromes including Polydactyly Acrocallosal Syndrome: Basal Cell Nevus Syndrome: Mirror Hand Deformity: Mohr Syndrome: a rare congenital disorder in which the individual has absence or only partial formation of the corpus callosum

accompanied by skull and facial malformations, and some degree of finger or toe malformations.

A rare syndrome characterized by hand and arm defects which are the same as foot and lower leg defects

(e.g. missing radius and missing tibia) as well as nasal defects. an autosomal dominant condition with complete penetrance and variable expressivity A rare genetic disorder characterized by oral frenula, oral clefts, underdeveloped nose flaps and finger abnormalities People Affected Hrithik Roshan: is an Indian actor who appears in Bollywood films born with a supernumerary thumb on his right hard Anahi: Gemma Arterton: a Mexican actress and singer an English actress

was born with six fingers on each hand

extra fingers were "tied" and fell off after time Problems That Occur Commonly and Treatments PROBLEMS blood disorders heart abnormalities craniofacial abnormalities TREATMENTS surgically Preaxial Polydactyly:
single thumb must be reconstructed
from two duplicate, or split, thumbs Postaxial Polydactyly:
removed either with minor operation Cental Polydactyly:
requires complex surgical procedure to reconstruct the hand, soft tissues, tendons, ligaments, and joints must be reconstructed. BY: ANJALI PATEL SHRUTI PATEL DHAVAL PATEL KENAR WILLIAMS THE END!
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