• #1-1. Various Hair Transplant Methods


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    Over the last two decades, hair transplant operation methods have made much progress. The number of hair transplant operations conducted across the world including Asian countries is increasing every year, and many surgeons are exerting tireless efforts to produce better transplant results.


    In this regard, this article will deal with the method for accurately measuring scalp laxity in advance for the flap sampling within the safe range in the process of taking a hair follicle tissue sample from the donor site at the back of the head; the method for obtaining a hair follicle while minimizing damage to it; and surgical methods for minimizing the scar of the donor site.


    These surgical techniques are judged to be sufficiently applicable not only for hair transplant but for other cosmetic surgeries involving incisions or sutures on the head.


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    Measurement of Scalp Laxity




    The previous scalp laxity measurement was a subjective assessment of the scalp laxity with the manual palpation of the donor site, especially by moving the scalp or the hair vertically. By contrast, ‘laxometer’, a measuring device recently invented by Mohebi, can objectively measure the scalp laxity.      


    For the measurement of scalp laxity using the laxometer, the author designated and examined a total of seven areas of the donor site: central occipital area, both lateral occipital areas, both mastoid areas, and both temple areas. Each measuring points were spaced about 5cm apart.


    According to the results of a test performed by the author in a total 68 Korean patients, the mean value of laxity per area was 1.9cm for central occipital area, 1.6cm for lateral occipital area, 1.3cm for mastoid area, and 1.1cm for temple area. When around 3,000 strands of hair were collected, the incision within this range of laxity could minimize the postoperative skin stiffness and tightness or the scar at the donor site.


    If a large hair transplant is needed despite low laxity, the scalp laxity should increase through a sufficient preoperative scalp exercise prior to sampling.     


    - To bo continued

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