What Is ASIA Impairment Scale

The ASIA impairment scale describes a person’s functional impairment as a result of their spinal cord injury.

A- Complete

No motor or sensory function in the lowest sacral segment (S4-S5)

B- Incomplete

Sensory function below neurologic level and in S4-S5, no motor function below neurologic level

C- Incomplete

Motor function is preserved below neurologic level and more than half of the key muscle groups below neurologic level have a muscle grade less than 3.

D- Incomplete

Motor function is preserved below neurologic level and at least half of the key muscle groups below neurologic level have a muscle grade 3.

E- Normal

Sensory and motor function is normal

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