Table 1 : American Spinal Injury Association Impairment Scale (AIS)*.


A Complete

B Sensory incomplete: sensory but not motor function is preserved below the
neurological level and includes the sacral segments S4-S5

C Motor incomplete: 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 strength

D Motor incomplete: motor function is preserved below the neurological level,
and at least half of key muscles below the neurological level have a muscle
grade of 3 or more strength

E Normal

*From: International Standards for Neurological Classification of Spinal Cord Injury.
Available at: http://www.asia-spinalinjury.org/elearning/ASIA_ISCOS_high.pdf.
Accessed on April 21, 2016.

Lazaro et al.Physical Therapy and Rehabilitation  2016 3:4DOI : 10.7243/2055-2386-3-4