UNDERSTANDING GRAFT SURVIVAL RATES

Follicular Unit Extraction (FUE) is the dominant method in modern hair transplantation. However, the minimally invasive nature of FUE does not guarantee high yield. The survival of an extracted graft depends heavily on the surgeon's precision, transection rates, and out-of-body time.

Transection Rates

Transection occurs when the hair follicle is accidentally cut during extraction. World-class clinics maintain a transection rate of under 5%. When evaluating a clinic, mandate that they disclose their audited transection rates. High-speed, technician-led extractions often result in rates exceeding 20%, permanently depleting the donor zone.

Out-of-Body Time

Follicles are living tissue. Their survival rate drops significantly if kept outside the body for extended periods. Elite clinics utilize specialized chilled storage solutions (like HypoThermosol or ATP) to maintain graft viability while awaiting implantation. Ask your prospective clinic about their graft storage protocols.

Punch Size & Tooling

The diameter of the punch tool matters. Tools ranging from 0.7mm to 0.9mm are standard. Larger punches increase scarring in the donor area, while overly small punches risk higher transection. The use of manual vs motorized punches is highly debated, but surgeon skill supersedes the tool type.

Implantation Methods (DHI vs Slits)

Once extracted, grafts can be placed into pre-made slits using forceps, or implanted directly using a Choi Implanter Pen (often marketed as DHI - Direct Hair Implantation). Both methods are effective, provided the surgical team correctly manages depth, angle, and direction.