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The follicular unit (FU) was first defined by Headington and the conceptual framework for using FUs in hair transplantation was laid out by Bernstein and Rassman,yeezys 350 for sale. It became clear to most surgical hair restoration practitioners that the single-strip harvesting and stereomicroscopic dissection techniques developed by Limmer in 1988 were the best way to both harvest and isolate FUs,ugg clearance.
Although single-strip harvesting is an extremely efficient means of obtaining tissue for subsequent dissection into FUs,bailey bow uggs, it results in a linear scar. Careful technique with thin donor strips will produce very fine scars, but if the strips are taken too wide, the scar can widen to an unacceptable degree. Covering the donor area with longer hair was the only solution to widened scars,ugg boots, as surgical repairs of these wounds generally proved to be ineffective. As a result,uggs for sale, a number of patients became hesitant to undergo a hair transplant procedure that had a potentially difficult-to-treat widened linear scar.
In the mid-1990s,ugg boots, Rassman set out to find a way around this problem by directly extracting FUs from the donor area using a small punch. Early attempts were frustrated by high transection rates in a significant number of patients until Richard Shiell brought the work of Masumi Inaba to his attention.
Inaba"s technique varied slighty,ugg outlet, using a similar punch but only partially cutting down on the hair follicle and then removing the remainder with forceps. Inaba"s insight led to Rassman and Bernstein describing follicular unit extraction or the FOX procedure (FOllicular unit eXtraction),cheap kid uggs, outlining an entire surgical hair restoration procedure without strip harvesting
After performing the FOX procedure on patients of various nationalities it became obvious that extraction proved to be quite variable. Histologic analysis was used in an attempt to elucidate the cause of patient variability and the FOX Test was introduced, an important surgical recommendation tool to determine patient candidacy.
Overall results showed that the FOX Test classified approximately 60% of all patients as candidates for the FUE procedure. However,fake hermes belt, even the good hair transplant candidates had a strong possibility of follicle transection.
This process is comprised of two main steps. In the first step, a sharp 1 mm punch is placed over the follicular unit and aligned to approximate the angle of the hair shafts below the skin surface. A rotational motion of the punch is then used by the hair restoration doctor to cut through the skin and isolate FUs in the epidermis and upper dermis.
For a successful hair transplant procedure,cheap uggs, the incident angle of the punch cannot vary much from the hair shaft direction or some, or all,cheap uggs for kids, of the hairs in the FU will be transected. Since the hair bulbs in each FU splay outward in the deep dermis and fat,ugg boots, it is also important to limit the depth of the punch to the upper dermis,ray bans cheap, which proves difficult.
In step two, the extraction,ugg outlet, fine rat-toothed forceps are used to apply gentle traction to the top of the FU until the unit is pulled loose from its deep dermal and subcutaneous connections. There is person-to-person variation with this procedure. To help limit variation effects,uggs on sale, the technique was refined further, adding dissection when simple extraction proved difficult. If a graft cannot be removed with gentle traction,ugg outlet, then the deeper part of the graft is separated from the surrounding tissue through dissection using a fine needle (with a U-shaped tip) while traction is applied with delicate forceps.
With this additional dissection step,cheap uggs, percentages of positive FOX patients increased. Despite a significant yield improvement,buy ray bans, a large number of hair restoration patients still could not be shifted into "FUE candidacy." In many cases transection rates were still unacceptably high and dissection times for significant cases unacceptably long; the additional step slowed the entire process.
James Harris presented a paper and a new solution at an ISHRS scientific meeting,ugg outlet, in which he added an additional third step requiring new instrumentation. In this new three-step hair transplant procedure,yeezys 350 for sale online, a sharp punch is used to score the epidermis (rather than cut through the full thickness to the dermis) and then a dull punch is used (through a back-and-forth twisting motion) to bluntly dissect the FU graft from the surrounding epidermis and dermis .
This variation has several advantages over the original two-step process. Using a dull punch avoids follicle transection and allows intact FUs to be extracted more easily. As the blunt-tipped punch is advanced into the dermis, splayed follicles are "gathered together," avoiding transection. In effect, the dull-punch technique allows a full realization of the "extraction concept" with an easy-to-learn methodology. One untoward result of the three-step technique is a possible higher incidence of buried grafts,cheap ugg boots, as discussed later. In addition, some of the FUs remain tethered to the subcutaneous tissue and require additional dissection.
One great advantage of this addition was that it opens this surgical hair restoration technique to the inherent FOX-negative population: those with very fine hair and those with African kinky hair types. Because the procedure is performed blindly,kids uggs, visualization is no longer an issue,uggs, potentially increasing yield for those with hard-to-see gray hair. In addition, it appears that this FUE modification has applicability for corrective procedures,ugg, removing FUs inside old plugs.
Indications for FUE have evolved considerably. Initially, FUE was limited to FOX-positive patients (that showed minimal transection) and in those in which the size of the balding area matched the surgical team"s ability to perform the procedure in an acceptable time frame - essentially small procedures in select patients. With improved techniques,ugg clearance outlet, Rassman reported his largest case yet in 2004: 1903 FUs performed exclusively with the original two-step technique. Harris" modification should allow these large sessions in a greater number of hair transplantation patients.
Nuances of three-step technique
Although the three-step technique is easier to master than the two-step technique,kids ugg boots, there are certain factors that will increase its efficiency and success.
Because the subcutaneous course of follicles cannot be ascertained with great accuracy,ugg, "scoring" incisions should be limited to a depth of between 1.3 mm and 1.5 mm (approximately the level of the end of the bevel on a standard 1 mm Miltex punch) to decrease the risk of inadvertent transection. However,ugg clearance, in hair transplant patients whose follicles are slightly longer,sparkle uggs, scoring incision depths may be increased by 0.1-0.2 mm. This increase should facilitate insertion of the "dissecting" punch and may decrease the incidence of "buried" grafts.
Even though the use of a blunt punch provides protection for follicles and makes the angle of insertion less critical, follicles may be damaged if the angle is radically different from the follicle"s direction. To prevent damage, scoring incisions can be created,uggs for kids, and their angles reassessed to obtain a more accurate estimate of the follicle"s direction and more accurately "aim" the dissecting punch.
Follicle separation from the epidermis and upper dermis at the sebaceous gland may occur during extraction. This phenomenon,ugg bailey botton for sale, which has been called "capping,bailey button triplet uggs cheap," can be handled in three ways. If the subcutaneous attachment is significant,ugg outlet online, a second pass with a dissecting punch can be attempted. A second option is to grasp the unit at the sebaceous gland region and pull,ugg boots clearance, applying a slow, steady force. The final option,cheap uggs, if standard dissection fails,ugg, is to leave the graft in situ and allow the skin to heal by secondary intention.
Since a third step is required in this new hair restoration method,ugg boots, the need for efficiency has increased. Rather than performing each of the three steps for each FU in sequence,cheap uggs, a preferred method is to identify an area to be extracted,cheap uggs, score 25-50 FUs,ugg factory outlet, dissect each one,cheap uggs for sale, and then extract. Assistants may help with dissection and extraction but care must be taken to identify any buried grafts for subsequent retrieval efforts.
The need for tumescence varies from patient to patient, but for the most part,discount uggs, it has been found that tumescence may cause the dermis to become somewhat "mushy" and impede the extraction process. The hair transplant surgeon must make constant assessments of extraction success each step of the way with every patient. Ease of extraction also seems to vary with scalp location. The occipital area tends to be easier while temporal areas may require manual dissection due to a higher degree of tethering.
Management of buried grafts
As previously mentioned,bailey button uggs, this hair transplantation technique has an inherent possibility of producing buried grafts. Incidence can vary from patient to patient depending on unidentified skin characteristics. It has been observed that in some patients and in some areas (the temples for example),ugg boots, slightly increasing scoring depths decreases the incidence of buried grafts.
When a buried graft is identified,knock off ray bans, immediately apply pressure around it in an attempt to "force" the graft to the surface. If this maneuver fails,kid uggs, the hair restoration doctor should examine the circular incision to identify the follicle base,bailey bow uggs cheap, a key step in facilitating removal. If the follicle is not visible,discount ray bans for sale, use small, curved forceps with the tip directed towards the "superior" aspect of the incision in an attempt to grasp the FU. Owing to punch insertion angles,replica ray bans, the incision depth is shallower at the superior aspect of the incision. Grafts often invert at this location by tethering to a nonscored attachment.
If the graft still cannot be located,UGG, make a small incision towards the superior aspect to create a larger exploratory opening. If after these steps visualization still eludes the hair transplant surgeon,ugg clearance boots, the graft should be left buried. Exact incidences of graft burial and graft recovery are not available; however, in a 40-patient and approximately 10,bailey button uggs on sale,000-graft study, only two instances of buried grafts resulted in hair-bearing inflamed cysts requiring removal.
Indications for FUE
FUE is indicated in the following situations:
1,ugg sale. When even a very thin linear scar is unacceptable (i,uggs for sale cheap.e. in those who shave their head or wear their hair very short)
2. When a patient requests an FUE procedure and enough grafts can be harvested to meet his or her needs
3,bailey button triplet uggs. In patients with limited hair loss or those who require small sessions. This group would include patients with androgenetic alopecia in a Norwood Class 3 pattern or those with small vertex balding areas
6. Scarring that makes both the two- and three-step procedures problematic,uggs outlet.
FUE is an exciting advancement that propels the field of hair transplant surgery one step closer to the elite minimally invasive status. The promise of an almost scarless surgery is enticing to both patient and surgeon. For the hair restoration doctor who has to perform this tedious technique,bailey bow uggs, there remain many vague issues ranging from ethical representations of patient results to practical realities of surgical indication. Training periods are extensive,ugg boots outlet, risks of less than desirable results are high,uggs, and many technical problems have yet to be worked out.
FUE clearly has a valuable place in a growing number of hair transplant candidates. Although the techniques have improved, issues of patient selection, donor area healing by secondary intention after large sessions,ugg outlet online, and imbedded grafts still remain. The reasons for selecting FUE rather than a strip harvest may be the avoidance of a linear scar, the desire for a virtually pain-free recovery period, or simply the idea of having a minimally invasive procedure.
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