TABLE 1:

The ASIA classification of neurologic impairment

ASIA Grade	Description
A	No motor or sensory function preserved in the sacral segments
B	Sensory but not motor function preserved in at least the sacral segments
C	Motor function preserved below the neurologic level and most key muscles have motor score <3
D	Motor function preserved below the neurologic level and most key muscles have a motor score of ≥3
E	Motor and sensory function is normal.

Note.—ASIA indicates American Spinal Injury Association. Adapted from Ditunno (6).