Density and number of implantable hairs

Just in time, there was a good answer to the question of the upper class, so I moved it.

Dr. William Rathman, who founded the prestigious hair transplant center NHI in the United States
On July 4, 2005, he posted on his blog baldingblog.com
"Density and Supply of Donor Hair"
It is a translation of the answer to the question and is introduced as in the original text.

I hope this will help you.

And with the posts and pictures that I posted on the bulletin board last December
All are Americans who planted 12,000 hairs in three surgeries.

First, I'll plant 5,000 hairs. Naturally
Second, 4,000 hairs are planted to increase density
Third, plant 3,000 hairs to correct the finish

If you have enough hair on the back, you can have hope.


Question:
How many hairs (in hair follicles) can I transplant?
(How many hairs (grafts) does a person have to transplant?)


Answer:
To calculate the number of hair in implantable donor
Assuming that the person with the most severe hair loss is Norwood 7
I think 70% of the original normal hair falls out.

In other words, this person combines the sides and the back of his hair
It's about the size of a 3 inch x 4 inch (about 77.5 cm2) wreath and there's hair left.
The average number of hairs per hair follicle unit is calculated as two
Assuming that the original hair is 100,000
In this case, we can theoretically transplant one-half of the remaining head, or 15,000 hairs (7,500 follicles).

But like many patients in our hospital
If you consider other factors such as scalp flexibility and healing effects
If it's Norwood 6 or 7, you can transplant up to 15,000 to 20,000 hairs.

Of course, if you have a lot of hair and have a lot of hair density
When I think it's up to 150,000 hearts
You can get more than 50% of the donor's hair
You can get a beauty effect only by running very fast.

In general, even if you have a lot of hair to transplant
If you're not a very serious bald person or a perfectionist with your hair
Most patients transplant only a smaller amount of hair than mentioned above.


The supply is calculated by using the most bald person you can find.
Assuming normal density of his hair, a person with the Norwood Class 7 hair loss pattern (the worst case) will lose 70% of the total hair he was born with.

This will leave him with a 3 inch by 14 inch wreath of hair around the back and sides of his head.
Assuming 100,000 original hairs averaging 2 hairs per follicular unit, that would mean that such a person could theoretically move half of the permanent wreath of hair (15,000 hairs or 7,500 grafts).

There are other factors involved such as the looseness of the scalp and healing factors.
We have a number of patients with Class 6 and 7 hair loss patterns than have moved between 15,000-20,000 hairs.

The ones with the very high numbers generally had higher densities of the hairs on the head.
One patient comes to mind had a birth hair population of about 150,000 hairs.
He had 50% more to work with and he took advantage of that supply with wonderful results.

Generally, that is a lot of hair to move and unless you are very, very bald and have a very ‘perfectionist’ view of your need for fullnesss, most people get away with moving less hair.





> I know that hair transplants cost a lot of money.
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> But if you can get rid of the stress, attention, time, and cost of your hair
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> That much money, even if the amount is large, it can be considered as an investment in the future and be affordable..
>
>
>
> But I'm curious
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> What percentage of the hair that the hair transplant surgery loses can you fill?
>
>
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> In other words, except for the sides and the back of your hair, it's typical that you don't have any hair at all
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> How much hair can you have when you transplant hair to a person with genetic baldness
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> I'm curious.
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> Excluding the back and side hair, there are about 50,000 hairs
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> Currently, there is a limit of 20,000 transplants with hair transplantation technology..
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> I want an answer like this.
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> I ask you to do it~>

[This post was copied from 2006-06-2204:32:55 hair transplant by the CEO]