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
Knowledge of the segmental cutaneous innervation of the skin of the lower extremity is important in determining the level of intervertebral disc disease. Thus, S1 nerve root irritation will result in pain located along the -
assistant
The correct answer is  S1 nerve root impairment results in

Weak plantar flexion
Weak eversion of the foot
Depressed ankle jerk
Sensory loss along lateral border of foot