Hair Transplant Technique

Hair Transplant Technique

Every surgical treatment, the techniques of the operation will range based totally on private preference and scientific occasions. Although the essential technique described herein is almost universally relevant, the precise techniques do mirror maximum closely the method-ology favored via the lead writer (JEV).

 

Anesthesia, Hair transplantation may be finished below nearby anesthesia on my own or with supplemental sedation. The local anesthesia answer is a 40-mL mixture of zero.25% bupivacaine with 1: 200 epinephrines + 20 mL 1.0% lidocaine with 1:2 000 epinephrine. This solution is used within the donor and recipient websites, and supplementation with additional bupivacaine 0.25% is completed in each region of the scalp prior to discharge from the working room. If aware sedation is covered with the manner, the patient is premedicated with 1 to 2 mg PO alprazolam. Within the working room, an intravenous cocktail of ketamine 5 mg/mL, midazolam 0.5 mg/mL, and fentanyl 10 mcg/ mL is titrated to reap the favored level of sedation. All patients receiving any form of sedation are continuously monitored in the course of the process with oximetry and get hold of supplemental nasal oxygen.

 

Donor Site Harvest

 

Strip excision, in modern-day practice, follicular devices may be received both via strip excision of the donor scalp with removal using a technique called follicular unit extraction (FUE).

In coaching for the strip harvest, the selected area of donor’s hair is trimmed to 4 to 5-mm duration and the patient is positioned in a lateral decubitus position. An ellipse of donor scalp is printed, and following the management of neighborhood anesthesia, the tumescent saline answer is infiltrated. Tumescence alongside precise knife blade angulation parallel to the hair shafts reduces follicle transection. Dissection degree of the donor strip should be at the superficial fat to avoid damage to the occipital neurovascular package deal. The wound is closed in 2 layers, with an absorbable suture inside the deep layer and a monofilament suture of desire at the extent of the pores and skin. Staples or dissolving sutures also are alternatives.

 

Trichophytic closure, with the appearance of shorter hair-styles, there was an expanded interest in minimizing (or maximally concealing) the donor scar. The trichophytic closure has been defined to sell scar camouflage through permitting hair boom through the scar. After the first layer of the donor wound is closed, the complete decrease edge of the incision epithelium is excised. The very last running suture is then completed, with care taken to keep away from deep “bites” of the scalp which have the ability to damage underlying follicles (Figures 5A-F and 6A-C). This crucial anatomic detail is worth emphasizing to maximize the consequences with the trichophytic closure method. Deepithelization, as well as suture depth, have to now not exceed 1 mm, to avoid harm to the follicle “bulge” area. Although the bulge was at the beginning defined as the portion of the hair follicle to which the actor pili (AP) muscle attaches, this critical region has currently attained huge interest because it’s far in which follicular epithelial stem cells had been diagnosed. The bulge region starts off evolved at an intensity of about 1 mm and extends all the way down to 1.8 mm. lately; a double-layer trichophytic closure method became defined.

 

Graft Preparation, As soon as the donor tissue has been harvested the use of the strip excision method; the tissue is at once immersed in chilled isotonic saline or any other sort of preferred “protecting” solution. Graft preparation is in line with-fashioned using stereomicroscopes and microsurgical instrumentation. Initially, the donor strip is performed into slivers, every being 1 FU in width (approximately 1-2 mm). Extensive skill and enjoy are required to avoid tran-phase of grafts at some point of slivering and at the identical time maintaining a green pace of practice. Each sliver is then dissected into FU grafts (figure 7). Those grafts are positioned lower back right into a maintaining solution till they’re planted. It’s far vital that those grafts live wet in order for them to keep away from desiccation.

 

A follicular unit extraction is an alternative approach of donor harvest. This approach is essentially a polished “micro punch grafting” version of the older punch graft technique. Using the contemporary technique of FUE, 1 FU is removed at a time. There are numerous strategies and instruments to perform FUE. Those encompass manual, electricity-assisted, and automated techniques. No matter which method is employed, the internet end result remains the isolation and elimination of an unmarried FU (Figures 3 and 7). The closing puncture is left to heal by secondary aim. A few hair transplant surgeons pick out to rent FUE on a selective basis for small cases (figure eight), while others choose this donor harvest technique for their large classes (figure nine). The multiplied popularity of FUE has been connected to the improvement of energy-assisted technology in addition to a fashionable fashion towards minimally-invasive strategies. The indications, results, and techniques for FUE as a donor harvest choice are observed some other place.

 

Take a look at these figures

Figure 5. Donor site harvest and trichophytic closure technique. (A) The patient is shown in decubitus position with donor hair shaved to 4 mm. (B) Excised donor strip. (C) The first of the 2-layer donor site closure is complete. (D, E) The intraoperative technique is shown and illustrated, with de-epithelization of the donor wound margin. (F) The final closure is shown; with superficial bites of 1 mm. Superficial needle entry into the scalp is performed to avoid injury to the follicle “bulge” zone.
Figure 6. A healed donor harvest site is shown after strip excision and closure with the trichophytic closure technique. (A) Eight months postoperatively. (B) Diagram of healed donor scar following trichophytic closure. (C) Re-excision of the donor scar shown in part A, illustrating hair growth through the initial closure site on tangential view of the specimen
Figure 7. Intraoperative view of small follicular unit extraction (FUE) donor harvest site. (A) Manual FUE harvest tool in use. (B) FUE donor harvest completed. (C) Donor site 8 months after initial harvest

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