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Table 3 ASIA Impairment Scale [10]

From: Role of minimally invasive percutaneous fixation in thoracolumbar fractures: a prospective study

Grade Description
A Complete No sensory or motor function is preserved in the sacral segments S4–S5
B Incomplete Sensory but not motor function is preserved below the neurological level and extends through the sacral segments S4–S5
C Incomplete Motor function is preserved below the neurological level, and the majority of key muscles below the neurological level have a muscle grade less than 3
D Incomplete Motor function is preserved below the neurological level, and the majority of key muscles below the neurological level have a muscle grade greater than or equal to 3
E Normal Sensory and motor function is normal