sandra
your fathers problem sounds like it could be piriformis syndrome. the piriformis muscle is in hip and in some people the sciatic nerve is under this muscle or runs thru it, if this muscle is damaged it can press on sciatic nerve and cause severe pain in hip that radiates down legs on one or both legs. has he been checked for this, if not have him mention it to his doctor. I'm just beginning to learn about it, as I have been in pain for over 2 years, and they thought it was spinal stenois so I had back surgery and pain is the same as before, I am going in sept for injections in this muscle which is supposed to help