Hair transplant surgery relies on being able to redistribute donor hair from one area to another. A diagnosis must take place to ensure there is a plentiful resource. Otherwise, it may not be viable. A hair transplant is considered a minor medical procedure. Performed under local anaesthetic. It is still a medical procedure. The patient must undergo a medical assessment to determine their suitability. Before any decision can be made to proceed.
The Technical Appraisal Is an Important Aspect to the Consultation Process
Donor follicular unit density per cm²
The average number of hairs per Follicular Unit (FU)
Donor Surface Area measurement
Calculation of any miniaturisation
Assessment of graft numbers available and required
A combination of all these factors will help to build a picture of the hair restoration plan.
The important donor hair supply
The donor is a finite resource. It will run out so needs to be protected. The donor hair density will ultimately determine your suitability for a hair transplant. It is measured by the number of natural follicular units per cm². Density can vary from genre and hair characteristics. There must be a minimum density value to make a hair transplant viable. Donor hair density can start as low as 50 FU cm² to over 100 cm². With an average donor density around 75 FUcm².
The density of the donor is measured from each side of the head and back. A band of hair in what is considered to be the safe zone. An area unaffected by androgenic alopecia, genetic hair loss is important. The sides commonly will have a slightly lower density of hair. As well as a lower hair count to follicular unit. Normally a high percentage of single and two hair units. Opposed to the back with a higher concentration of three and four hair units.