system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 19-year-old man is brought to the emergency department following a high-speed motor vehicle collision in which he was a restrained passenger. He complains of pelvic pain and involuntary loss of urine, with constant dribbling. Examination shows perineal bruising and there is pain with manual compression of the pelvis. Pelvic ultrasound shows a normal bladder. Injury to which of the following structures is most likely responsible for this patient's urinary incontinence?
assistant
Pelvic splanchnic nerves