Cosmetic Plastic and Hair Restorative Surgeon, Hair Transplant Institute, Islamabad, Pakistan.
Plastic and Hair Restorative Surgeon, Hair Transplant Institute, Islamabad, Pakistan.
J Cosmet Dermatol. 2019 Dec;18(6):1837-1840. doi: 10.1111/jocd.12957. Epub 2019 May 20.
To know the transection rate using three different kinds of punches of the same size (0.9 mm).
The study was conducted in 10 patients undergoing FUE. Informed consent was obtained from all the patients. In each patient, five areas of 1 cm were selected in three rows (each row having five areas of 1 cm ). For each row, one kind of punch (sharp, serrated, and blunt) was used. The rows were selected randomly (single-blind). The machine was set at a constant speed of 1200-1500 g. The grafts were harvested with the patient in lying position, the surgeon sitting on head side, and the harvesting started from the right side of the patient to left side. For each box, the FUs and hair were calculated. The harvested FUs were checked under microscope. Any transection (complete or incomplete) was calculated. All the data were collected and analyzed.
The total hair yield was maximum with blunt punch (268.4) followed by serrated (247.2) and sharp (207.6). Similarly, the maximum FU yield was 155 using serrated punch followed by 154.4 by blunt and 147.2 in sharp punch. The hair:FUs was highest in blunt punch (1:1.738) vs serrated punch (1:1.595) vs sharp punch (1:1.410). The transection rate was highest with sharp punch (23.9%) followed by serrated (18.8%) and blunt punch (14.5%).
The graft:hair ratio was maximum using blunt punch. Sharp punch resulted in maximum transection rate with lowest graft:hair ratio.
了解使用三种相同尺寸（0.9 毫米）的打孔器时的横断率。
本研究在 10 例行 FUE 的患者中进行。所有患者均获得知情同意。在每位患者中，选择 3 行各 5 个 1cm 区域（每行 5 个 1cm 区域）。每行使用一种打孔器（锋利、锯齿状和钝）。行随机选择（单盲）。机器以 1200-1500g 的恒定速度设置。在患者处于卧位、外科医生坐在头部侧面的情况下采集移植物，从患者的右侧开始向左侧采集。对于每个盒，计算 FUs 和头发。在显微镜下检查采集的 FUs。计算任何横断（完全或不完全）。收集和分析所有数据。
钝打孔器的总毛发产量最高（268.4），其次是锯齿状打孔器（247.2）和锋利打孔器（207.6）。同样，使用锯齿状打孔器获得的最大 FU 产量为 155，其次是钝打孔器为 154.4，锋利打孔器为 147.2。在钝打孔器（1:1.738）与锯齿打孔器（1:1.595）和锋利打孔器（1:1.410）相比，头发：FU 比率最高。横断率最高的是锋利打孔器（23.9%），其次是锯齿打孔器（18.8%）和钝打孔器（14.5%）。
使用钝打孔器时，移植物：头发比例最大。锋利打孔器导致横断率最高，而移植物：头发比例最低。
