My right leg is shorter than my left, what kind of doctor should I go see to find out what I should do?

I went to so many doctors, none of them have any other advice than to wear a heel. Now, the heel doesn’t seem to help. What kind of doctor should I go see?

I know for a fact that my hip is uneven and my right leg is slightly shorter than my left, but I don’t know by how much. The first doctor I went to (a scoliosis doctor) thought it was ¼ inch, but now I think it’s possibly more than that, how can I find out for sure?

Also, this has lead to much knee pain over the course of 6 months or more, I’ve tried ignoring it for so long but it’s gotten to the point where even sitting down will induce some knee pain. I think that there may be some meniscus damage too (I’m guessing), how would I find out about that, too?

Thank you guys very much.