Thankyou for your advice, I was also worried that transplants into scar tissue may not work as well as into virgin scalp as you mention. Also because the scars at at the back of my head , the grafts would in effect need to be planted uphill.
As you mention I did try having the longer scar cut out and resitched but it just stretched back to the previous width. I have received four initial previous donor harvests across the back of my head which healed fine. The surgeons made a separate scar each time , I was left with several scars but they were very fine . I prefer to have several small scars than one big wide one. The surgeon who did the next transplant ( my fifth) correctly said the back was to tight for further harvests and so harvested from over my left ear and this healed very good .
I came back to have the same done from over my right ear, but the previous surgeon had left, and the new surgeon said it was not as productive from over the ear, and said he would tidy up all the scars on the back of my head. He left one long wide scar accross the back of my head and did not get any more grafts than from over the ear because the back of my head had been harvested several times before. As I was not happy I went back and he agreed to harvest from over and behind my ear and then transplant into the wide scar at the back and also into my crown (5 and 6) where I have lost hair naturally, my front hair is OK.
But instead he harvested again from the back half way accross, just above and adjacent to the previous scar leaving anothe wide scar.
I went to a cosmetic surgeon who said He could insert a balloon to stretch the skin at the back of my head , but warned that this may not guarantee leaving a fine scar at the join. Also if the skin at the back of my head is stetched it may make the thin crown area larger , the reverse of a scalp reduction operation.
So I am wary of cutting out the scars as the back donor zone is quite tight and the hair is obviously thinner from several procedures. So that is why I am looking for a surgeon and patients who have experience of transplanting into scars. I did read somewhere that some types of scars are better than others for growing grafts, considering the scar cause blood supply etc ? eg surgical scars may be better than scar left by burns for transplanting?
I should not really be in this position because I had quite a good ratio of donor area to transplanted area crown 5 and 6, there should have been no need to take risks by over harvesting in the back zone It is not nice having to move hair from one donor site to another which does not relate to the reason I initially had hair transplants.