How are ASIA grades A through E defined?

AIS A: complete (no motor/sensory below injury). B: sensory incomplete (no motor function). C: motor incomplete (motor preserved but <3/5 in ≥50% key muscles). D: motor incomplete (≥3/5 in ≥50% key muscles). E: normal motor and sensory function.

When is the ASIA examination most reliably performed after SCI?

The examination is most reliable at 72 hours post-injury when spinal shock is resolving. Early classification (24h) is used for clinical decision-making but the 72-hour and 30-day assessments have better prognostic value for functional outcome.

Spinal Cord Injury ASIA Impairment Scale

Classify spinal cord injury severity using the ASIA Impairment Scale (AIS) from A (complete) to E (normal), with neurological level and motor/sensory scores.

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Frequently Asked Questions

How are ASIA grades A through E defined?

When is the ASIA examination most reliably performed after SCI?