How long should be the transplanted Hairs after 5 Months

Just recently emerging from the scalp, usually.

Your hair only grows a half-inch per month. Most guys's grafts are dormant for 2 or 3 months, after growing for the first two weeks initially.

Every guy is different, but I would say a half-inch is a good guess.

For you Europeans, about 1 centimeter...

I've noticed that the transplanted hairs will actually grow faster for the first week or so before it falls out. This may represent some sort of protective mechanism as the follicle prepares to enter the sleep phase.

After 3 months you may have no growth yet. So don't panic. I've had patients that have taken 4 1/2 months just to begin growing.

By and large, however, I agree with Arfy that 1/2 inch is a reasonable expectation after 3 months or so.

Dr. Feller,

Any comments on growth in old scarred Recipient areas from prior surgeries? What is the longest visible growth in areas that have been hit 2 or 3 times prior?

Thanks

I think it has been pretty well established by now that grafts grow most successfully after the first transplant. This is why I advocate the "one pass" method described by Dr Seager, and push for high density over a smaller area. Read my Density thread for a more detailed explanation.
Dr. Feller