I had spinal fusion on L4/L5 with bone graph and cadaver bone. I'm almost 3 months post op. While I feel better I still have pain and have muscle spasms. My Dr. said my fusion is not fusing . My hardware is 4 screws and 2 rods. I did smoke until weeks b4 surgery and quit..well I started back (5 cigarettes a day) . I have tried so hard ...Chantix made me go crazy... I am addicted terribly to nicotine. I'm very active and have been since 2 weeks after my surgery. I walk 3 miles daily, cook meals , do laundry, mow the yard, clean the pool , do all grocery shopping and swim. I don't take prescription pain meds only Tylenol Or Naproxen. My dr. refuses to give me any muscle relaxers. He told me if there isn't any progress in the fusion by my next office visit ( next week) that I will have to have another surgery to add more hardware. I've started taking vitamin d 3 and calcium daily. Needless to say I'm scared to death. My dr.is very intimidating. I'm 48 yrs old and in good health except I had my thyroid removed at 18 due to thyroid cancer.and do take thyroid medicine daily. Is 3 1/2 months long enough time to see a lot of results or fusing???