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incisions in the patient's scalp; thereby minimizing damage to the scalp's connective tissue and blood supply. In contrast; the larger wounds produced by mini-micrografting and plug transplants caused cosmetic problems that included dimpling and pigment changes in the skin; depression or elevation of the grafts; and a thinned, shiny look to the scalp. These problems can be avoided using very small grafts and very small recipient wounds.
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into small, needle-made incisions without any need for removing tissue. This preserves the elasticity of the scalp and holds the tiny grafts snugly in place. After surgery, the snug fit facilitates wound healing and helps to ensure that the grafts will get enough oxygen from the surrounding tissue in order to maximize their survival.
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In patients with high hair density, there are usually a sufficient number of follicular units in the donor area to accomplish the patient's goals. However, in the patient with low hair density, a compromise must be made, and this is guided by the follicular unit constant. By transplanting a patient
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Since the follicular unit is a distinct anatomic and physiologic entity, preserving it intact during the graft dissection is felt to maximize growth. In FUT, after hair is removed from the back of the scalp in a single strip, stereo-microscopic dissection allows the individual follicular units to be
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Follicular Unit
Transplantation enables the hair transplant to look natural both at the individual follicular unit level and in regards to the overall graft distribution. Since scalp hair normally grows in follicular units of 1 to 4 hairs, the exclusive use of these naturally-occurring units in FUT
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Another advantage of making small recipient wounds is the ability to create a "snug fit" for the follicular unit grafts. Unlike the punch grafts and some mini-grafting techniques; each of which removes a small bit of tissue in the recipient area; the trimmed follicular unit grafts used in FUT fit
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Follicular units are relatively compact structures, but are surrounded by substantial amounts of non-hair bearing skin. This extra tissue can be removed without injuring the follicles, using stereo-microscopic dissection. These small, trimmed, follicular unit grafts can then be placed into tiny
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In the older mini-micrografting techniques, hair was harvested in multiple strips with the follicular units in each strip edge showing damage from the harvesting blades. The strips were then cut into smaller pieces, a process that would break up follicular units and risk additional damage to the
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The key to a natural appearing hair transplant is to have the hair emerge from perfectly normal skin, so minimizing trauma to the scalp is an important aspect of follicular unit transplantation. This can be accomplished by trimming away the excess tissue around the follicular units and then
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Additionally, by using individual follicular units, rather than larger grafts, the surgeon has a greater total number of grafts with which to work. This allows the surgeon to distribute the grafts more evenly over the scalp for a more natural overall distribution of hair.
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with low hair density using the same number and spacing of follicular units as in a patient with high density, the transplant surgeon will produce a thinner look, but will allow proper conservation of donor hair for future procedures.
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procedures that used larger grafts and often produced a pluggy, unnatural look. In a properly-performed follicular unit transplant, the results will mimic the way hair grows in nature and will be undetectable as a hair transplant.
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ensures that each graft will be identical to the surrounding follicular units. Thus, when the transplanted follicular units grow hair after a transplant, the overall results of the transplant will appear natural.
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The density of naturally-occurring follicular units in a normal scalp is relatively constant, measured at approximately 1 unit per mm. This helps in the planning of a hair transplant in two ways:
144:. In follicular unit transplantation, these small units allow the surgeon to safely transplant thousands of grafts in a single session, which maximizes the cosmetic impact of the procedure.
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Extracting large numbers of grafts provides sufficient 1- and 2-hair grafts to create a soft frontal hairline and enough 3- and 4- hair grafts to give the patient the fullest possible look.
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There are four reasons why the follicular unit transplantation procedure allows a hair transplant surgeon to transplant large numbers of grafts in each session:
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Limmer BL. Elliptical donor stereoscopically assisted micrografting as an approach to further refinement in hair transplantation. Dermatol Surg 1994;20:789-793.
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The hair transplant surgeon can accurately estimate the number of follicular grafts that can be obtained from dissecting a donor strip of a given size.
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Orentreich N: Autografts in alopecias and other selected dermatological conditions. Annals of the New York
Academy of Sciences 83:463-479, 1959.
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Bernstein RM, Rassman WR: Follicular Unit
Transplantation: 2005, Issue on Advanced Cosmetic Surgery. Dermatologic Clinics 2005; 23(3): 393-414.
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Using large numbers of grafts in each session preserves the donor supply by reducing the number of times incisions are made in the donor area,
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technique, also known as the strip procedure, where a patient's hair is transplanted in naturally occurring groups of 1 to 4 hairs, called
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Follicular unit transplantation uses follicular units to accomplish a number of objectives critical to the hair restoration process:
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The same number of follicular units can be used to cover a specific size bald area regardless of the patient's actual hair density.
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A larger number of grafts can compensate for the shedding that frequently accompanies a hair transplant, called telogen effluvium,
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Seager D. Binocular stereoscopic dissecting microscopes: should we use them? Hair
Transplant Forum Int 1996; 6(4): 2-5.
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The hair restoration can be completed quickly so that the patient has minimal interference with his/her lifestyle,
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In recent history, FUT had been the most common procedure for hair restoration. As of 2017, the newer
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inserting them into small recipient sites on the patient's scalp.
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159:(FUE) procedure has become the most common procedure.
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234:Ability to perform large hair transplant sessions
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184:Ensuring the naturalness of hair transplant
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109:Learn how and when to remove this message
147:FUT is considered an advance over older
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47:adding citations to reliable sources
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171:Maximizing hair transplant growth
58:"Follicular unit transplantation"
136:. Follicular units also contain
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316:"Statistics and Research"
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197:Ease of surgical planning
138:sebaceous (oil) glands
282:Beard Hair Transplant
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318:. 28 December 2017.
16:Hair loss treatment
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