Hair transplantation by follicular unit extraction for male androgenetic alopecia: A retrospective observational study from two centers.

[BACKGROUND] Follicular unit extraction (FUE) is the most popular method of hair transplantation in today's world. Hair transplantation in androgenetic alopecia (AGA) in males can restore the frontal hairline and provide hair density in alopecic areas to the satisfaction of most patients.

[METHODS] Consecutive male patients of AGA who underwent hair transplantation by FUE method in two centers between the period of January 2016 and June 2017 have been included in this study based on inclusion and exclusion criteria. Photographic images, trichoscopy and Likert's scale were used to assess patient's improvement in hair density after the transplantation procedure. Statistical methods using SPSS software was used to analyze the results. Institutional ethical clearance and patients' written consent for procedure and images was obtained. The study was an observational retrospective study using data and images from records for which consent and ethical clearance was obtained from patients and the institution.

[RESULTS] Average number of follicular units transplanted in patients was 1290 (improvement in hair density: of 30.61 follicular units/sq cm). There was a statistically significant difference in improvement in hair density in patients younger than 33 years and in patients with Norwood classification below stage 4a. Forty-nine patients were satisfied with the results after assessment by the Likert scale.

[CONCLUSION] Hair transplantation by follicular extraction method provides good hair cover in AGA in males. This modern dermatosurgical technique with its many innovations is a very helpful technique to improve quality of life in male pattern baldness.