I had Ll-5 S-1 descectomy 2 years ago this month. For the last year I have had episodes of severe pain in my right buttock with foot and leg numbness occuring about once a week. For the past 6 months it occurs every morning. My surgeon tells me it is caused by weak back muscles. I've been through a physical therapy program 3 times, My back pain does subside some but doesn't totally go away. I perform back excerses twice a week with little or no improvement. I also have leg heaviness when standing or walking. Should I seek another surgeon?