Table 1 American Spinal Injury Association classification ¹¹

A

No sensory or motor function is preserved in sacral segments S4-S5

B

Sensory, but not motor function is preserved below the neurologic level and extends through sacral segments S4-S5

C

Motor function is preserved below the neurologic level and most key muscles below the neurologic level have muscle grade less than 3.

D

Motor function is preserved below the neurologic level and most key muscles below the neurologic level have muscle grade greater than or equal to 3.

E

Sensory and motor functions are normal