Is you leg pain new, increased or unresolved from prior to surgery? What grade was your slip (25%-75% or mm).
If you are 6 months out from a PLIF fusion for an isthmic spondylolisthesis and have continued leg pain, I would be concerned with incomplete decompression or surgical stretch of L5 nerve roots. At 6 months, I would start with a new MRI but wouldn’t hesitate to add a CT scan. If there is no root compression, a nerve test (EMG/NCV) would be helpful.
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.