Patient should know that the complication of implants using screws and rods and fusion with greater then four hour surgeries have reported complication ,such as infection,as high as 15 percent . The rates vary from institution to institution but still very high for elective surgery. I really try to stress this fact when chosing a procedure. Unfortunately, less invasive smaller surgery cannot always be an options for certain serious conditions. I try to be very honest going over the treatment should an infection occur. There is also the problem of revising a surgery where claims that an outpatient local procedure was performed that did not work out. These revision cases can have the highest infection rates. It certainly best if the first operation was well thought out and reality based so that revsion rates will be lower. Ask your doctor if they have published results of their success rate. Honest surgeons will discuss these issues in detail.