Follicular Unit Transplantation (FUT) is a validated surgical intervention designed to treat advanced pattern hair loss. The primary objective is to transfer dihydrotestosterone-resistant hair follicles from the donor zone at the back and sides of the head to androgen-sensitive areas of the scalp. By harvesting naturally occurring anatomical bundles containing one to four terminal hairs, FUT enables surgeons to restore density and recreate natural hairlines with high graft survival rates.

Follicular Unit Transplantation (FUT) is performed under local anaesthesia with mild oral sedation if required. The surgeon delineates a horizontal donor strip in the mid-occipital donor region, typically measuring 1 to 1.5 cm in width and variable length based on required graft count. Local anaesthetic with epinephrine is injected to induce tumescence, which provides anaesthesia, haemostasis, and structural separation of deeper tissue structures. Using a single-blade scalpel, the donor strip is excised down to the subgaleal fascia, avoiding injury to deep deep-seated nerves and vascular trunks. The donor wound is closed using a trichophytic technique, where one tissue edge is bevelled to allow hair follicles to grow through the resulting linear scar. The excised tissue strip is placed in chilled holding solution. Dissection technicians slice the tissue into thin anatomical slivers under stereomicroscopes, isolating intact individual follicular units containing 1, 2, 3, or 4 hairs. Concurrently, the surgeon prepares recipient sites using custom micro-blades sized to match graft dimensions, strictly adhering to natural hair angles, direction, and density distribution. Dissected grafts are systematically placed into recipient incisions using micro-forceps or specialized implanters.

Evidence-based clinical advantages of Follicular Unit Transplantation (FUT) include a high total graft yield in a single procedure session, superior graft survival due to protective tissue retention during microscopic dissection (Jimenez & Ruifernández, 1999), and efficient conservation of the donor zone for future procedures. Unlike non-surgical interventions, FUT produces permanent structural density restoration in regions affected by advanced follicular miniaturization.

Recovery from Follicular Unit Transplantation (FUT) follows a structured timeline. Acute donor site healing occurs over 10 to 14 days, culminating in suture removal. Recipient site crusts shed within 7 to 10 days. Transient loss of transplanted hair shafts, known as telogen effluvium or shock shedding, occurs between weeks 2 and 8. Active hair regrowth initiates around month 3 to 4, with peak density, hair shaft diameter, and texture maturating between 12 and 18 months post-operatively.

Follicular Unit Transplantation (FUT) is indicated for permanent hair loss conditions. These include moderate-to-severe androgenetic alopecia (male and female pattern hair loss), stable traction alopecia caused by physical tension on hair shafts, cicatricial alopecia (scarring hair loss) following disease stabilization, and traumatic or post-surgical scar reconstruction across the scalp, eyebrows, or facial hair regions.

Pre-procedural preparation requires a comprehensive dermatological assessment, including scalp dermoscopy to evaluate donor hair density, miniaturization percentage, and scalp laxity measurements (e.g., Mayer scale). Patients must discontinue non-steroidal anti-inflammatory drugs (NSAIDs), aspirin, vitamin E, high-dose omega-3 fatty acids, and herbal supplements 10 to 14 days before surgery to reduce intraoperative bleeding risk. Alcohol consumption and tobacco use should cease at least two weeks prior to surgery, as nicotine causes vasoconstriction and impairs microvascular tissue perfusion, compromising graft survival. Topical minoxidil should be stopped 7 to 14 days preoperatively to prevent localized vasodilation and excess intraoperative bleeding. Patients wash their hair with an antiseptic shampoo on the morning of the procedure.

Complications associated with FUT are categorized by donor and recipient site effects. Donor site risks include temporary or permanent linear scar formation, hypertrophic or keloid scarring, wound dehiscence, local infection, prolonged hypoesthesia (numbness) due to occipital nerve trunk irritation, and postoperative pain. Recipient site risks include localized folliculitis, prolonged erythema, delayed graft growth, tissue necrosis secondary to high packing densities, graft dislodgement, and transient shedding of native surrounding hairs (shock loss). Rare surgical risks include systemic local anaesthetic toxicity and arteriovenous malformations.

The clinical journey for Follicular Unit Transplantation (FUT) begins with a detailed dermatological workup to assess donor density and scalp laxity. On the day of the procedure, local anaesthesia is administered, a donor tissue strip is excised, and the donor site is closed using a trichophytic technique. Surgical teams dissect the harvested strip into individual follicular units under stereomicroscopes while the primary surgeon creates micro-incisions in the recipient area. Grafts are meticulously inserted into these recipient sites. Post-operative care includes specialized scalp hygiene, wound care, and structured follow-up assessments over 12 to 18 months to evaluate tissue healing and progressive hair growth.