Harvested vs Estimated Follicular Units in Hair Transplantation

    August 2018 in “ Journal of Cosmetic Dermatology ”
    Yau‐Li Huang, Mei‐Ching Lee, Shyue‐Luen Chang … Chun‐Yu Cheng
    Studysummary This study observed that actual harvested grafts in hair transplantation yielded more 1-hair follicular units and fewer 3-hair follicular units than originally estimated, with older age and multiple procedures limiting donor scalp harvesting.
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    Research cited in this study 8

    1. Retrospective Assessment of Follicular Unit Density in Asian Men With Androgenetic Alopecia Dermatologic Surgery · 2017
    2. Age-Related Hair Changes in Men: Mechanisms and Management of Alopecia and Graying Maturitas · 2014
    3. Estimating the Number of Lifetime Follicular Units: A Survey and Comments of Experienced Hair Transplant Surgeons Dermatologic Surgery · 2013
    4. Evidence of Increased DNA Methylation of the Androgen Receptor Gene in Occipital Hair Follicles from Men with Androgenetic Alopecia British Journal of Dermatology · 2011
    5. Surgical Anatomy of the Scalp Dermatologic Surgery · 2002
    6. The Distribution of Follicular Units in the Chinese Scalp: Implications for Reconstruction of Natural-Appearing Hairlines in Orientals Dermatologic Surgery · 2002
    7. Distribution of Human Hair in Follicular Units Dermatologic Surgery · 1999
    8. Different Levels of 5α-Reductase Type I and II, Aromatase, and Androgen Receptor in Hair Follicles of Women and Men with Androgenetic Alopecia Journal of Investigative Dermatology · 1997

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