Suggest Treatment For Dent In Buttocks, Hip Pain And Numb Thighs

I suddenly got a dent in my left buttocks. My hip hurts and I do have some pain in my buttocks. The back of my thigh gets numb as well as the the top of my left foot and left outer shin. I have had a kenalog shot in the bursa 4 months ago but my orthopod says it s not in the same location as the dent hmmm? I had an MRI of the lower spine came back negative. Going next week for an emg. I have had sciatic pain in the past and this is deffinitky a different feeling. Can u give me some insight please?