Anyone who has had complications after an invasive procedure (involves needles and knives) should immediately talk to the doctor who did the procedure. Infection is the biggest concern and would require immediate attention.   Deciding to have surgery is a very personal choice which hinges on quality of life. Surgery can always make matters worse. Those who are in poor health (smokers, diabetics, obese) have the worst chances. Still, predicting the outcome is very difficult. When it comes to fusion, a surgeon once said that if a potential fusion candidate does well in a rigid back brace, then the surgery will probably help.   I have never come across a back patient who cannot do any exercises (even those with the worst curves--scoliosis). The key is learning the right exercises with a physical therapist who specializes in spine stabilization. My favorite exercise book is called "Spine Stabilization" and is available on www.optp.com. I list more books on my website, www.gvbacks.com.   Zero gravity chair, back brace, and a whole lot of the right exercises are the best way to avoid a fusion.   Dr. Christina Lasich, MD