Again, a loose screw is an indication of a lack of fusion. The screw would not loosen if there were no motion in the already “fused” segments. I have seen one instance where a loose screw was not associated with a lack of fusion but countless ones with.’You need in my opinion x-rays and a CT scan.
Donald Corenman, MD, DC is a highly-regarded spine surgeon, considered an expert in the area of neck and back pain. Trained as both a Medical Doctor and Doctor of Chiropractic, Dr. Corenman earned academic appointments as Clinical Assistant Professor and Assistant Professor of Orthopaedic Surgery at the University of Colorado Health Sciences Center, and his research on spine surgery and rehabilitation has resulted in the publication of multiple peer-reviewed articles and two books.