Theoretically speaking, multiple FUE sessions should allow for a greater number of grafts compared to multiple strip sessions simply because the harvestable area is much greater. But this would be a rare situation.
The problem is that with each successive FUE session the skin around the extraction site begins to change. In most cases the skin becomes brittle making future FUE sessions that much more difficult each time.
Of course the same exact thing happens around strip scars, but because the length of the edge of a strip scar is about 10 times less than the combined edges of FUE extraction sites, the effect is barely noticed.
Even if this brittle conversion of the skin were 10 times greater after strip surgery, it would still be of no consequence since strip harvesting does not rely on skin resistance at all.
Another problem is that FUE yield is consistently lower compared to strip due to the three main forces inherent to all FUE procedures:
1.Follicular torsion (twisting of the top of the graft inside the punch tool while the bottom is still attached to deep dermis)
2.Traction (Pulling and tugging on the graft to remove it from the skin)
3.Compression (Squeezing on the graft to get a grip while pulling from the skin)
This is why I favor strip procedures for patients who need large numbers of grafts or for whom large numbers of grafts are anticipated.
Feller Medical, PC
Great Neck, NY