Nerves can take up to 1 1/2 years to fully recover. It is unlikely that they will recover further after that. You probably have reached maximum benefit in leg recovery. If you have weakness that is significant, I would recommend an EMG test from a well skilled and experienced neurologist. This test can indicate if there is ongoing compression or findings that indicate old problems that you cannot recover from. Understand that neurogenic claudication will not show up on this EMG test.
If there is continuing stenosis (narrowing of the spinal canal-neurogenic claudication), there still could be some hope that a revision surgery might improve your weakness. I cannot comment without reviewing your images and history.
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.
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.