( A linear slot incision creates a "perfect fit" for the hair graft.)
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[disc/disc-top-banner.htm]Reprinted with permission from Dr. Hitzig's office
Coupled Follicular Units
Hairs naturally grow from the scalp in groups of 2 to 4 hairs called follicular
units. Coupled Follicular Units (CFU) describes natural linear groups of 2 or more
follicullar units. Because they are naturally placed closer together than could be
achieved by transplanting each follicular unit individually these grafts achieve greater
density. Basically, the maximum hair density (# of hairs per square centimeter) an
individual can obtain will never exceed the density of the donor area (sides and back of
your scalp). Therefore, moving intact groups (CFU) of follicular units will create maximum
transplant density. It also exponentially increases the speed of the procedure and
significantly reduces the chance for physical trauma and thereby insures minimal hair loss
in the transfer.
Linear slot incisions are vital when transplanting CFU's. By removing tiny, narrow corresponding bald tissue (0.5 mm wide) the slot incision achieves a "perfect fit" for the graft . This "perfect fit" allows grafts with more hairs to be transplanted without graft distortion and compression. The random spacing between hairs in the graft is the same as your original hair from the donor. The hairs grow without pitting or a clumpy appearance. Since the grafts are narrow, healing is quick and virtually undetectable
( A linear slot incision creates a "perfect fit" for the hair graft.)