RESUMEN
Modern hair restoration surgery is based on a technique known as follicular unit transplantation, in which follicular units are the exclusive structures used as hair grafts. In Part 1 of this 2-part review, we describe how the techniques employed in hair transplantation have evolved into their present forms. Anatomic concepts of specific relevance for dermatologists are discussed, including the distribution and ex vivo morphology of scalp follicular units. Male androgenetic alopecia and female pattern hair loss are the most common reasons for hair loss consultations with dermatologists and will be the primary focus of this review. However, because not all hair disorders are suitable for transplantation, this review will also describe which scalp conditions are amenable to surgery and which are not. Guidelines are provided to help dermatologists better define good and bad candidates for hair transplantation. Other conditions for which hair transplantation surgery is indicated are reviewed.
Asunto(s)
Alopecia , Folículo Piloso , Alopecia/cirugía , Femenino , Cabello , Humanos , Masculino , Cuero Cabelludo , Trasplante de Piel , Recolección de Tejidos y ÓrganosRESUMEN
BACKGROUND: To compare the three techniques, that is, using tissue spreader, using skin hooks technique, and using sharp scissor techniques. METHODS: A double-blind, randomized study was conducted in 10 patients undergoing hair transplant surgery by strip harvest after informed consent. The marked strip was divided into 3 equal parts to be assigned randomly to one of the harvesting techniques, that is, (a) using tissue spreader technique (A), (b) using skin hooks technique (B), and (c) using sharp scissor technique (C). The total number of hair of the strip margins were counted. The number of transected hair were also counted. The time taken for harvesting for each technique was noted. All the data were analyzed using ANOVA test. RESULTS: The average length of the strip was 27.8 cm. The mean harvesting time was 46.2 seconds (technique A), 174.5 seconds (technique B), and 49.9 seconds (technique C) (P < 0.05). The total hair density was 640.9 vs 664.5 vs 690.0, respectively. The total transection rate was 2.822 vs 2.689 vs 2.465 in technique A, B, and C, respectively. CONCLUSION: Sharp scissor technique is a safe technique which results in lower transection rate and no significant increase in operation time.
Asunto(s)
Alopecia/terapia , Folículo Piloso/trasplante , Recolección de Tejidos y Órganos/métodos , Método Doble Ciego , Humanos , Factores de Tiempo , Recolección de Tejidos y Órganos/instrumentaciónRESUMEN
The latest innovation to hair restoration surgery has been the introduction of a robotic system for harvesting grafts. This system uses the follicular unit extraction/follicular isolation technique method for harvesting follicular units, which is particularly well suited to the abilities of a robotic technology. The ARTAS system analyzes images of the donor area and then a dual-chamber needle and blunt dissecting punch are used to harvest the follicular units. The robotic technology is now being used in various locations around the world. This article discusses the use of the robotic system, its capabilities, and the advantages and disadvantages of the system.