Pain in Legs

I have recently had a discectomy/fusion at C5-C6 to alleviate pain and numbness in my hands and arms. Also, I have disc herniations at C7-T1, T7-T8 and T8-T9. Over the past 2 years I have been dealing with back pain along with severe leg pain. An MRI of the lumbar spine showed no problems. Is it possible that compressions of the spinal cord in thorasic area can cause this leg pain? Any advice for pain relief?