Yes, it is rare to have 12 fingers. This condition is known as polydactyly, where a person has more than the usual number of fingers or toes.
Understanding Polydactyly
Polydactyly is a congenital condition, meaning it is present at birth. It can affect the hands, feet, or both. Here's a closer look:
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What is it? Polydactyly refers to the presence of extra digits (fingers or toes). The extra digit can range from a small nub to a fully formed finger or toe.
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How does it occur? Polydactyly occurs during the development of a fetus. It is believed to be caused by a combination of genetic and environmental factors.
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How frequent is it in births? According to the Encyclopedia of Children's Health, polydactyly of the hands occurs in approximately 1 in 3000 births. Polydactyly of the toes occurs more frequently, at approximately 2 in 1000 births.
Types of Polydactyly
Polydactyly can manifest in different ways. Here are a few common variations:
- Preaxial: Extra digit is located on the thumb side of the hand or the big toe side of the foot.
- Postaxial: Extra digit is located on the little finger side of the hand or the little toe side of the foot.
- Central: The extra digit is located in the middle of the hand or foot.
Treatment Options
Treatment for polydactyly varies depending on the location and functionality of the extra digit. Common treatment options include:
- Surgical Removal: If the extra digit is not functional or causes issues, surgical removal is often recommended.
- Non-surgical Management: Sometimes, if the extra digit is small and not causing issues, it might not require surgery.
| Location | Occurrence Rate |
|---|---|
| Hands | 1 in 3000 births |
| Toes | 2 in 1000 births |
In conclusion, having 12 fingers, which results from having two extra fingers, is indeed rare. The incidence of polydactyly of the hands is approximately 1 in 3000 births, making it an uncommon condition.
