On the scar hair wouldn't grow on its own as there are no follicles in the fibrous scar in that area. But hair transplant can be done for the scarred area which will give growth. The results of hair transplant are not as good as it would be if done in non scarred area but it can give reasonably good results to cover the scar. The patients i had done hair transplant for over the scarred are pretty happy with their results. We can chalk out a plan for you too is your interested. You can visit me for additional information. Hope this was helpful.