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Multiple follicular unit grafts 〔 〕 is a hair transplant technique that has been developed to complement and enhance current micro grafting and follicular unit procedures by increasing density without sacrificing naturalness.〔 〕 A follicular unit (FU) is a naturally occurring bundle of hairs. This bundle contains anywhere from 1 to 4 hairs. A "multiple follicular unit" is a graft that contains more than one follicular unit. When combined these follicular units can total 5 to 8 hairs creating more significant results.〔 〕 These grafts are not to be mistaken with old style hair plugs harvested with a punch biopsy instrument, but instead are modern day slit grafts harvested from a thin donor strip in the back of the head and separated under magnification. == History == Norman Orentreich, a dermatologist in New York, is credited for popularizing the modern hair transplant of the 20th century.〔 〕 In 1952, he used a punch biopsy instrument to harvest large round 4 mm grafts from the donor area which were to be transplanted into punch graft sites in the patient's balding area. Although Dr. Orentreich’s pioneering research advanced hair transplantation, the results were unnatural, "pluggy" and extremely sparse. In the 1980s, hair transplantation techniques improved when surgeons began to use much smaller grafts called minigrafts and micrografts which produced better, natural looking results.〔 〕 Today’s prevailing technique is a follicular unit transplant (FUT).〔Bernstein RM, Rassman WR, Seager D, Shapiro R, et al. Standardizing the classification and description of follicular unit transplantation and mini-micrografting techniques. Dermatol Surg 1998; 24: 957-63〕 Follicular unit transplants require the separation of follicles in their natural groupings. Under a microscope the hair in the donor area can be seen growing in patterns of 1, 2, 3 and 4 hairs. Most common are the 1, 2 and 3 hair groupings. Micrografts or single hair grafts are placed in the frontal hairline while FU Grafts containing 2 to 4 hairs are placed behind the hairline. Results with this technique are generally very natural but can lack density and require more than one surgery for satisfying results. For some doctors, using micrografts and follicular units only is not enough. Instead, they choose to use a mixture of micro grafts, FU grafts and “Multiple Follicular Unit Grafts”.〔Elliott VW (2005) Grafts containing multiple follicular units have advantages for surgeon and patient. Hair Transplant Forum Int 15:203〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Multiple follicular unit grafts」の詳細全文を読む スポンサード リンク
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