The implantation of extracted hair root groups is done via incisions made in the recipient area. These incisions can be made sagitally (top-down/parallel) or laterally (sideways/ perpendicular). The needle and slit techniques can be done in various ways: lasers are no longer used, as they cause too much tissue damage, with implanted FUs having difficulty taking root. Ready-made needles, scalpels or special blades are now commonly used. Custom-built blades, adaptable to the respective requirements, may also be used. The finer the instruments used are, the more accurately FUs can be implanted, as well as in higher numbers.
Both methods - needle and slit techniques - offer very good results, as they cannot just be used flexibly and adapted to the respective situation, but also cause minimum damage to tissue, thereby considerably increasing the percentage of transplanted hairs taking root and growing. Customized blades can be produced locally in the clinic in different sizes (also intermediate ones) with relatively little effort. They are much sharper than needles, meaning that they are a lot more precise and only cause very small wounds. This has a positive effect on the healing process. In a transplantation involving 3000 FUs for instance, 3000 times less damage is caused. Further advantages are to be found when the wounds heal, as the use of blades generally causes less bleeding, quicker healing and minimum damage to the skin, with little or no scarring. Scalp rashes are also less prevalent.
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