Though a very intrresting question, not a lot of work has been done with regardsto answering the question. Follicular units naturally occur as 1,2,3,4 and sometimes upto 7 hair grafts. In the traditional strip surgery the surgeon has access to different sized grafts availabe from the extracted strip & place accordingly.

With the H+ technique, the surgeon can pick and choose the size of FU'S required to get the desired results. The success of the H+ or any FUE technique is directly dependent on the quality of grafts extracted. This has been backed by studies by Beehner and Bernstein who clearly suggests that in the follicular unit, the whole is greater than the sum or its parts.

From my experience, I have clearly observed that follicular units that are intact have significantly better outcomes than split ones. Hence we have been able to achieve very natural looking results with the H+ technique.