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Angle
Angle
The appropriate angle of the incision depends on the location within the scalp where the hairs are being implanted, but should also follow the angle of exit of any existing hairs to avoid damaging roots and the subcutaneous portion of the hair shafts adjacent to incisions. Angles will vary from a forward 45 degrees in the hairline of most individuals to an upright 90 degrees in the crown, then reversing to a very acute angle if simulating the downward hair growth direction in the occipital region (Fig. 62-21). Incision angle is perhaps most critical when performing eyebrow transplants, where the angle should be as acute as possible so that the hairs grow almost horizontally.
Figure 62-21. Acute angulation of recipient-siteโmaking blade.