Drs. Hasson & Wong
Lateral Slit Technique
Validated in
Journal of Dermatologic Surgery
Orientation of Multi-Hair Follicles in Nonbald Men:
Perpendicular Versus Parallel
Authored by
Yagyu K, Hayashi K, Chang SC. Natural Hair Transplant International
Research Institute, Kioicho Clinic, Tokyo, Japan.
BACKGROUND There has been much debate about the orientation of
multi-hair grafts in order to obtain an appearance of fullness after the
hair transplantation.
OBJECTIVES To
analyze natural orientation of multi-hair follicles and the influence of
hair flow from the crown swirl.
METHODS Natural
orientation of follicles was analyzed microscopically in 100 nonbald
men: a clockwise whorl flow group (50 men) and a counterclockwise group
(50 men).
RESULTS The
majority of multi-hair follicles were oriented perpendicular to the
radial line from the whorl in both the groups. The percentage of
perpendicular orientation was large in the peripheral and middle scalp
areas (49–79%), and it decreased in the vertex (38–49%, p<.05 or .01).
The percentages of parallel, right oblique, and left oblique orientation
were small in the peripheral area with a slight increase in the vertex
(3–12% vs. 14–24%, p<.05 or .01).
CONCLUSION Original
orientation of multi-hair follicles was mainly perpendicular to the
radial line from the whorl irrelevant to the crown swirl hair flow.
Multi-hair grafts transplanted perpendicularly would look similar to the
natural hair follicles in the front half of the scalp.