BACKGROUND
Follicular unit excision (FUE) is used to harvest follicular units for hair transplantation using trephine punches. The characteristics of FUE punches can impact the success of this technique; thus, many innovative punch designs and devices have been developed. With many options available, it can be difficult for the hair restoration surgeon to know which punch best suits the needs of their patients.
OBJECTIVE
To provide a comprehensive review of punch shapes and devices available.
METHODS
Search of PubMed, reference mining of relevant publications, and hand searching trade publications.
RESULTS
We examined FUE punches and devices and consolidated descriptive information for each to create textual and visual guides. No single punch shape or device may suit all cases; thus, it is important to know the best uses and limitations of each.
CONCLUSION
The surgeon should have a comprehensive knowledge base of available punch shapes and devices and understand the advantages and disadvantages of each. It is also beneficial to have an in-depth knowledge of skin properties and follicular unit structure. Ultimately, understanding the dynamics behind punch excision will enhance the FUE technique.
Background
Early use of follicular unit excision (FUE) as a method of hair transplantation was limited by high rates of hair follicle transection. This hurdle has been overcome by innovative methods, punch shapes, and devices. With the vast array of tools available, it can be difficult for hair transplant surgeons to choose the best option for their practices.
Aims
To provide an in‐depth review and comparison of currently available FUE methods, punch designs, and motorized devices, and discuss how these tools fit the unique skin and hair characteristics of patients.
Methods
A review of the literature and available information on FUE methods, punches, and devices, as well as the authors’ experience in this area, is provided.
Results
Innovative FUE methods, punch shapes, and motorized devices have successfully minimized the rate of hair follicle transection. Methods include the use of sharp punches with depth control, and blunt rotating punches. Punch shapes such as flared, hybrid, and edge out have successfully reduced transections by keeping the cutting edge away from the follicles under the skin. The development of motorized devices using features including rotation, roto‐oscillation, oscillation, vibration, suction, and hydration has also aided in achieving more successful graft excision.
Conclusion
Follicular unit excision is a widely used technique by hair restoration surgeons. Therefore, it is important for physicians to be aware of the array of punches and devices available and understand how these tools can be used to adapt to the unique skin and hair characteristics of individual patients to optimize successful graft harvesting.
Microprocessor-controlled local anesthesia with the Wand is superior to traditional injection in consistently producing comfortable hair transplant treatments.
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