I’ve not got experience but I’ve often wondered what’s the point? It doesn’t solve the problem and only masks it temporarily. That’s assuming you have Osteo-Arthritis in your hip, sorry if that’s not the case. Hip pain is a bugger for sure.
I had a steroid injection under ultrasound a few weeks ago. Is that the sort of thing you mean? After a couple of days the pain had reduced and hoping it will last a few months. Don't know what you mean by recovery period though my OH went with me but I could have easily driven home myself