The Effect of Surgical Intervention for Delayed Cervical Central Cord Syndrome
Table 2
ASIA impairment scale.
Grade
Functional description
A
No sensory or motor function is preserved in the sacral segments S4-S5
B
Sensory but not motor function is preserved below the neurological level and includes the sacral segments S4-S5
C
Motor function is preserved below the neurological level, and more than half of key muscles below the neurological level have a muscle grade less than 3
D
Motor function is preserved below the neurological level, and at least half of key muscles below the neurological level have a muscle grade greater than or equal to 3