Is There A Reason Why Grafts Would Grow In Front But Not Crown?

[brahmabull117]

I had 4000 grafts transplanted end of last june (so 7 months in) and I'm seeing huge difference in front but basically nothing in the back. Is there any reason for this?


My doctor put about 2500 hairs in the crown and I'm not even seeing a third of that. Where did it all go?