It appears that you have now had a fusion of L3-S1 (the lowest three levels in the lower back) and you have continuing pain. The differential includes failure of fusion at one or more levels (pseudoarthrosis), malalignment of fusion, continued compression of the neural elements, chronic radiculopathy, arachnoiditis or sacroiliac syndrome.
The work-up includes a new MRI, a CT scan, a thorough evaluation and possibly some diagnostic blocks. Treatment may include further medications, therapy, surgery or neurostimulation.
You would need a close evaluation by an experienced spine surgeon.
Dr. Corenman
PLEASE REMEMBER, THIS FORUM IS MEANT TO PROVIDE GENERAL INFORMATION ON SPINE ANATOMY, CONDITIONS AND TREATMENTS. TO GET AN ACCURATE DIAGNOSIS, YOU MUST VISIT A QUALIFIED PROFESSIONAL IN PERSON.
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.