I was in the same situation with Roxy, I don't have pictures though.
 
She had LP surgery done on both back legs at the same time, so she had the same shave down.  Of course they shaved one side further into her side area than the other side so we had to deal with that being uneven too. 
 
 
Then after 6 weeks of regrowth, poor Roxy had to have another LP surgery, I thought they were going to shave the whole behind area again, but they only shaved the one side, so now she was really funny looking. 
It takes A LONG TIME for it to catch up.  So, I did wind up trimming her front long hair, then I trimmed a little more and so on and so on.  Roxy has a lot of hair and thick, so her behind area was coming in thicker and wavy/curly.  At about 6 or 8 months after her 1st surgery, I just decided to make it all look even and blend 
