A Comparison of Hair Growth Between Follicular-Unit Grafts Trimmed “Skinny” vs. “Chubby”

Evaluation of Survival Rate After Follicular Unit Transplantation Using the KNU Implanter

“…There are several reports in the literature, 1–5 even though the follow‐up periods are relatively short and the number of examined patients is relatively small (one to six patients), about the survival rate of micrografts in Caucasians. From Seager's 1 excellent study in which he compared survival rates of micrografts trimmed closely (ie, “skinny”) versus those trimmed leaving a generous amount of surrounding tissue (ie, “chubby”), he obtained an 89% survival rate in the skinny group and a 113% survival rate in the chubby group 6 months after transplantation.…”

“…This study was repeated by Beehner 2 with some modifications. Knowing the importance of the dermal papilla, he left a small amount of visible protective tissue around it in the skinny micrografts instead of being almost completely exposed.…”

“…We suppose that there are some differences in survival rate after hair transplantation among races, probably because of differences in hair characteristics. There are several reports 1–5 about survival rates in Caucasian patients with male pattern baldness, even though they are variable, but few studies about Oriental patients. Our study was performed to evaluate the average survival rate of micrografts (follicular unit grafts) using a KNU implanter, which was modified from the classic Choi hair implanter, 6 to compare the survival rate of one‐hair follicular units with that of two‐hair units, and to reveal the nature of transient hair loss shortly after transplantation.…”

Micropunch (0.8 mm or Less in Diameter) Hair Transplantation

“…The FU grafts also fall into three sizes (large (chubby), medium, and small (skinny)), in accordance with the degree of removal of the surrounding tissue; the implanted density and the recipient area determine the size used. They are usually trimmed as large‐sized FU grafts to secure graft survival 10–12 and may be trimmed to the same smaller size as the slit technique to achieve higher density and better natural appearance.…”

Survival of Densely Packed Follicular Unit Grafts Using the Lateral Slit Technique

“…They may be surprised to see results that are not as “thin” as they saw years ago when FUT techniques were not as good. They may even get more than 100 hairs growing (up to 133 hairs) from 100 hairs planted if they use slightly larger grafts and slightly larger recipient site incisions 5–7 …”