There are four different types
of flaps used for the correction of alopecia: temporo-parieto-occipital
flaps, lateral scalp flaps, long and short temporal vertical
flaps, and microsurgical free scalp flaps.
These techniques involve cutting and lifting bands of hair
scalp of approximately 20cm-long and positioning them onto
bald area. Flap surgery is an efficient method for treating
extensive types of baldness. This is because every single
available donor hair of the patient's can be used to produce
the end result.
However, there are serious disadvantages to this procedure
which should be carefully considered. For example, in Juri
flaps, the hair within them is always directed posteriorly
which is contrary to the normal hair direction seen in 99%
The hair direction also results in complete exposure of the
anterior line scar and hairline, and nearly always appears
too dense and coarse to look natural.