There are some studies that indicate electrical stimulation in the first four months after motor nerve injury is contraindicated (should not be used). In the first four months, there is a process called budding that occurs in the remaining intact nerves (see website under “how muscles recover from nerve injury”).
Stimulation might obstruct this healing mode in the first four months. It appears that after four months, electrical stimulation can be used.
During surgery, the nerve is gently retracted while the obstruction is cleared. You can look at the lumbar herniated disc video or the TLIF video on this website to understand this concept.
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.