What are grafts? why their count is critical in transplantation

densità area d'innesto trapianto capelli

Graft in Hair Transplantation: A Crucial Element

In the field of medicine, the term “graft” refers to tissues that are transferred from one part of the body to another. In the context of FUE hair transplantation, the graft is the hair follicle taken along with the surrounding tissue.

The Graft in Hair Transplantation: A Key Actor

Today, with access to a wealth of information online, many people considering a hair transplant are trying to understand how the procedure works before undergoing the procedure. Althoughthe number of grafts is often presented as the most important element affecting the outcome of FUE hair transplantation, it actually provides only limited information when evaluated alone. In fact, even if the number of grafts is high, patients may not understand why the result does not satisfy them. In FUE hair transplantation, it is necessary to evaluate not only the number of grafts, but also the number of hairs in each graft, the thickness of each hair, and the size of the transplanted area to get a complete picture.

Calculation of the Number of Grafts

Physicians determine the number of grafts based on the surface area and donor area. Simply put, the larger and thicker the donor area, the greater the number of grafts. Another aspect to consider is that people with a large donor area may also have a large graft area. To achieve the same density as a small area in an FUE hair transplant performed on a larger area, a larger number of grafts will need to be used. With this in mind, it is understood that the number of grafts does not affect the result as much as one might think. In terms of density, to achieve a good result, 35-45 grafts per cm2 should be placed.

The Absolute Density in FUE Hair Transplantation

Considering the factors mentioned above, we can formulate an equation with the factors affecting the outcome of hair transplantation. The number of grafts x the average number of hairs per graft x the thickness of the hair/the size of the area to be transplanted = Absolute Density. Any factor that increases absolute density positively affects the outcome of hair transplantation. Therefore, all these factors should be taken into consideration during transplant planning.

Hair Transplant Planning: A Crucial Step

To achieve the desired result, it is very important to evaluate all factors in hair transplantation during the planning stage. If you think more grafts can be taken from the donor area, you should calculate the graft area and extract the appropriate number of grafts. If the donor area is limited, the area to be transplanted should be limited accordingly. If the area to be transplanted is very small, it is better to make incisions first and know the exact number of grafts to be extracted. In this way, it is avoided to take out more grafts than necessary. If the hair of the person to be transplanted is thin, the incisions/channels should be opened with a specific density to achieve a certain density. By considering all these variables, an outcome that meets the patient’s expectations can be achieved by determining the hair transplant area with a satisfactory density.


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