Depth Control Scalp Board

  • Sungjoo Tommy Hwang


It is important to match the length of graft and incision depth if there are significant differences in the length of grafts in the same individual. In order to measure the length of graft efficiently, the author made a device named “Hwang’s board,” and it helps depth controlled transplantation, which reduced complications such as folliculitis, pitting, and poor survival.


Hwang’s board Depth controlled transplantation Intra-patient graft length difference Folliculitis Pitting 


  1. 1.
    Yoo J. Analysis of hair characteristics in Korean using phototrichograms. In: Unger W, Shapiro R, editors. Hair transplantation. 4th ed. New York: Marcel Dekker; 2004. p. 892–7.Google Scholar
  2. 2.
    Hwang S, Cotterill P. Intra-patient graft length differences influencing depth controlled incisions. Hair Transplant Forum Int. 2012;22(4):117. 122–3Google Scholar
  3. 3.
    Hwang S. A new device for depth controlled transplantation according to the graft. In: 22nd ISHRS Annual Scientific Meeting. Kuala Lumpur: ISHRS; 2014.Google Scholar

Copyright information

© Springer Japan KK, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Dr. Hwang’s Hair ClinicSeoulSouth Korea

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