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Unger, Robin et al.: 2023 Hair Transplantation DOI: 10.1055/b-0042-191694
Section I Basic Science

3 Hair Anatomy and Histology for the Hair Transplant Surgeon

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Editors: Unger, Robin; Shapiro, Ronald

Authors: Gupta, Aditya K.; McDonald, Adriane; Noreldin, Ahmed Adel; Bauman, Alan J.; Juliano, Alessandra; Abbasi, Ali; Dua, Aman; Christiano, Angela M.; O’Mara, Angela; Yong, Angeline Anning; Tosti, Antonella; Ruston, Antonio; Nusbaum, Aron G.; Poswal, Arvind; Shahmalak, Asim; Alp, Bayramoğlu; Nusbaum, Bernard P.; Farjo, Bessam; Feriduni, Bijan; Wolf, Bradley R.; Puig, Carlos J.; Varona, Christopher M.; Albertini, Conradin von; Ziering, Craig; Pathomvanich, Damkerng; Josephitis, David; Perez-Meza, David; Mangubat, E. Antonio; Ball, Edward A. M.; Poblet, Enrique; Eisenberg, Eric L.; Wang, Etienne C. E.; Rinaldi, Fabio; Jimenez, Francisco; Krenitsky, Gabriel H.; Williams, Greg; Abaci, Hasan Erbil; Radwanski, Henrique N.; Park, Jae Hyun; Hernandez, Irene; Harris, James A.; Vogel, James E.; Devroye, Jean; Irvine, Jeff; Epstein, Jeffrey; Cooley, Jerry E.; Shapiro, Jerry; Wong, Jerry; Kim, Jino; Jackow, Joanna; Cole, John; Dua, Kapil; Washenik, Ken; Williams, Ken; Erdogan, Koray; Sicco, Kristen Lo; Yagyu, Kuniyoshi; Bloch, Leila David; Santos, Leopoldo Duailibe; Avila, Lorena; Pontes, Luciana Takata; Khanna, Manoj; Avram, Marc R.; Pitchon, Marcelo; Crisóstomo, Márcio; Barusco, Marco N.; Sanseverino, Maria Angélica Muricy; Schambach, Marie A.; Unger, Mark; Speranzini, Mauro; Cole, Megan; Mayer, Melvin L.; Beehner, Michael L.; Neff, Mike; Mohmand, Mohammad H.; Ahmad, Muhammad; Rogers, Nicole E.; Large, Nicole; Farjo, Nilofer; Otberg, Nina; Desai, Nirav V.; Mohebi, Parsa; Frechet, Patrick; Mwamba, Patrick; Shapiro, Paul; Rose, Paul T.; Tesauro, Piero; Kinler, Rae Lynne P.; Rabbani, Ramin; Konior, Raymond J.; Kothottil, Renu; Lemos, Ricardo Gomes de; Mejia, Ricardo; Shiell, Richard C.; Finney, Robert; True, Robert H; Dorin, Robert J.; Haber, Robert S.; Unger, Robin; Shapiro, Ronald; Adajar, Ruel A.; Knudsen, Russell G.; Nadimi, Sahar; Lam, Samuel M.; Vasa, Sanjeev; Tovar, Sara Lea Salas; MD, Sara Wasserbauer; Boden, Scott A.; Keene, Sharon A.; Abbasi, Sheida; Kabaker, Sheldon S.; Kobren, Spencer David; Gabel, Steven; Hwang, Sungjoo “Tommy”; Nakatsui, Thomas C.; Carman, Timothy; Lardner, Tina; Elliott, Vance W.; Mysore, Venkataram; Unger, Walter P.; Rassman, William; Doucet, Yanne S.; MD, Young-Ran Lee; Guo, Zongyou

Title: Hair Transplantation

Print ISBN: 9781626236936; Online ISBN: 9781684202737; Book DOI: 10.1055/b000000335

6. Edition © 2023 Thieme. All rights reserved.
Thieme Medical Publishers, Inc., New York

Subjects: Plastic, Reconstructive and Cosmetic Surgery;Dermatology

Thieme Clinical Collections (English Language)



 
Francisco Jimenez, Irene Hernandez, and Enrique Poblet

Summary

The hair transplant surgeon should know in detail the macro- and microscopic anatomy of the human follicular unit as well as the anatomy and histology of the terminal hair follicle. In this chapter, we provide a new anatomical view of the follicular unit, beginning with its classic anatomical description but incorporating the newest information. The description of the macroscopic images of hair follicles at different stages of the cycle may be very useful for surgeons and technicians performing microscopic follicular dissections. Finally, the location of the different stem cell niches in human follicles is shown, discussing current understanding of how these cells operate during the process of hair regeneration.

Key words

follicular unit anatomy - terminal hairs - vellus hairs - hair cycle - anagen - catagen - telogen - bulge - dermal papilla
 
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