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 -
High-Yield Explanation
S1 nerve root impairment results in
Weak plantar flexion
Weak eversion of the foot
Depressed ankle jerk
Sensory loss along lateral border of foot