A 58-Year-Old Woman Is Evaluated in the Office for Urinary

A 58-year-old woman is evaluated in the office for urinary incontinence. Overactivity in the bladder was detected in the urodynamic studies. Behavioral interventions were not effective, and the patient refuses medical treatment. Electrical stimulation of the nerve fibers controlling pelvic floor muscles and urethral sphincter and bladder muscle is planned. The electrical stimulation should be introduced in which of the following structures?

A) Nucleus accumbens
B) Subthalamic nucleus
C) Vagus nerve
D) T6 nerve root
E) L5 nerve root
F) S3 nerve root