Hi all..I'm a first time poster here looking for some insights. Quick background and intro:
I'm a 56 year old female. In July of 2010 I had a L4-L5, L5-S1 posterior laminectomy and fusions. I had been rear ended (MVA) the year before and the accident combined with degenerative disc disease caused some major issues. The spacers were a combination of bone marrow (mine) and synthetic gel. All held together with six screws and two rods.
For the first 18 months everything was healing well. Then about six months ago I started to get a recurrence of symptoms that had gradually become worse and worse. Well after MRI's and CT's it became clear that the two sacral screws are now loose.
Today my neurosurgeon and I sat and compared all of my films since the surgery. The area around the screws had initially filled in with new bone and all seemed solid. Now, we could both easily see that the bone has 'shrunk away" from those two screws.
My question is simply this. Any idea of why? I am post-menopausal (hysterectomy in 2003), no hormone replacemnt, no osteoporosis. The next step is a three phase nuclear bone scan to see if any of the other levels are showing bone activity that isn't visible on the CT scan.
Thanks in advance for any insights.