I have had pain from my left buttocks down to my calf for about a year. It is now tingling and feeling numb. My PCP ordered cortisone injection, which helped for about 3-4 days and now the pain has returned as before. I m taking anti-inflammatory, stretching day and night and have not had any improvement. The mornings are the worst with pain. Is there any other treatments, besides surgery, meds, for this debilitating pain?