Butt is uneven due to ACL surgery. Can I still get a BBL? (Photo)

I had surgery when I was in high school on my left knee and ever since then my left butt cheek has been smaller than my right. (due to muscle loss) I tried excersizes specifically working on the left side but I could never see results. I'd like to get a bbl to even them out & increase the size. I am wondering if this is possible & if I even have enough fat to transfer? thank you!