Grade 1	Grade 2	Grade 3	Grade 4
Motor	No weakness or no change	Subjective weakness/no objective findings	Mild objective weakness without significant impairment of function	Objective weakness with impairment of function
Sensory	None or no change	Mild paresthesias or loss of deep tendon reflexes	Mild to moderate objective sensory loss/paresthesias	Severe objective sensory loss or paresthesias that interfere with function