I am facing a L4-L5 revision surgery due to a failed fusion from late last year (Nov-2013), and I am looking up options as to which route to go. . . but one thing I can't seem to find much information about is why are the screw/rods are commonly removed and replaced during a revision? Even if they are not loose?
I have looked at my CT scans and those screws are MASSIVE, I would think that even removing them would be a serious serious undertaking, I can't imagine there being any lumbar strength left to put anything back in. My screws and robs are actually part of a system (Exactech Silverbolt) and they are completely solid according to my orthopedic dr., I would think that loosening the rods would be the way to go to reduce the tension on the vertebrae to get access between, but I've never heard about a revision going this way, but maybe it's just my limited experience.
Anyone have any information? or maybe a personal experience they are willing to share?
Thanks for anything you have to add.
--) Dave (--