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Follicular unit extraction
Follicular unit extraction
FUE, also known as the follicular isolation technique, relies on punch biopsies for follicular extraction. Typically, 1-mm wide punches are used to remove single follicular units. This technique avoids disturbing the original hair follicle environment, which likely aids in growth and graft uptake. The RS can be prepared by creating 1-mm punches, spaced approximately 3 to 10 mm apart, with follicular units being placed into the chambers.38
In comparison to FUT, FUE is considered an easier technique, and is preferred in those with limited donor area size and smaller treatment areas. However, operator skill is also required to prevent follicular unit dissection, and fewer follicular grafts can be harvested in a single session due to the nature of the procedure. FUE grafts are often used to spot-treat achromic areas not repigmented using FUT.40 Two recent studies found FUE to be successful in treating eyelash leukotrichia.41,42 When compared to FUT, FUE treatment areas heal faster, and the DS does not scar or require dressing.38 One study compared FUE and PG in 25 patients with stable, nonsegmental vitiligo and found that there was no statistically significant difference in efficacy; however, in terms of ease of execution, PG is considered a better option.43