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Follicular unit extraction
Follicular unit extraction (FUE), also known as follicular transfer (FT), is one of two primary methods of obtaining follicular units, naturally occurring groups of one to four hairs, for hair transplantation. The other method is called strip harvesting.〔 In FUE harvesting, individual follicular units are extracted directly from the hair restoration patient's donor area, ideally one at a time. This differs from strip-harvesting because, in strip harvesting, a strip of skin is removed from the patient and then dissected into many individual follicular units. The follicular units obtained by either method are the basic building blocks of follicular unit transplantation (FUT).Nowadays FUE technology has grown into Advanced FUE. The main difference is that Advanced FUE enables the creation of larger donor pools by harvesting follicles from areas outside the head such as: chest, legs, arms, abdomen, back, face, and beard. Also Advanced FUE addresses the fact that hair often grows in curved trajectories. With standard FUE surgical there is the assumption that this growth occurs as a straight line. This entails a risk of damaging the follicles during the excision and retrieval of the grafts.
==History and research==
Follicular unit extraction (FUE) was first described by Masumi Inaba in Japan in 1988 who introduced the use of a 1-mm needle for extracting follicular units. FUE was successfully conducted on public patients by Dr Ray Woods in Australia, 1989 and was filmed for the 'Good Medicine' program for the first time in 1996. In 2002 it was first described in the medical literature by William R. Rassman and Robert M. Bernstein in their publication “Follicular Unit Extraction: Minimally Invasive Surgery for Hair Transplantation.”〔〔(【引用サイトリンク】title=Follicular Unit Extraction (FUE) )〕 Robotic FUE devices were discussed at the 2007 meeting of the International Society of Hair Restoration Surgery (ISHRS), and research in robotic devices was presented by Dr. Miquen G. Canales and Dr. David Berman at the 2008 meeting of the ISHRS.〔(【引用サイトリンク】title=Robotics in Follicular Unit Extraction )〕 Research was conducted by on the Artas system by Restoration Robotics in Mountain View, California and the Berman Skin Institute in Palo Alto and found that follicles could be removed individually at a rate of up to 1000 per hour through the use of 1-mm hollow needles.〔 Despite showing evidence of improvements in transection rate from the prior year, the findings suggested transection at a rate of 6–15% was not low enough for general use in hair restoration procedures.
BHFUE or BHT is the Follicular Unit Extraction of body hair which is transplanted to the scalp. It was first tested and proven effective by Dr Ray Woods in 1998.〔(JPRAS ), Volume 57, Issue 8 , Pages 789-791, December 2004.〕 It was also documented that although the body hair would typically only grow up to 4 cm, when transplanted to the scalp it could grow to 15 cm.
There are still extremely few surgeons and practices which have mastered Follicular unit extraction because the procedure takes considerable time and expense to learn and to develop skills to a high standard. In recent years, the tools used for this approach have increased in complexity.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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