I would agree that you most likely had a volume/pressure injury of your L4 nerve root by the injection. The motor nerve was more likely also damaged as you have fasciculations and atrophy along with the weakness of your quad. If it was only a pressure injury, it should heal faster but an intrasubstance injection could be more problematic. A new MRI is called for as well as an EMG nerve test. Unfortunately, it is human nature to deny that there was any injury due to the nerve block.’
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.