ASIA Impairment Scale


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Related to ASIA Impairment Scale: Spinal shock

ASIA Impairment Scale

A method of assessing the degree of motor and sensory impairment in spinal cord injured patients. The assessment is based on an examination of the perineum and anus, i.e., on the S4-S5 level of the spinal cord. Grade: A – Complete: No motor or sensory function; Grade B – Incomplete, sensory function is intact, but motor function is absent below and including the S4-S5 level; Grade C – Incomplete, motor function is preserved below the neurological level and more than half of the primary muscles have a muscle grade test of less than 3; Grade D – Incomplete: Motor function is preserved and at least half of the muscles below the S4-S5 level have a muscle grade test of 3 or better; and Grade E – Normal.
See also: scale
References in periodicals archive ?
In a recent prospective study conducted at our institution, we also showed that patients who were operated within 24 hours had 23% improvement by 2 Asia impairment scale versus 8% in patients who had surgery after 24 hours.40
Table showing change in the ASIA impairment scale between the preoperative status (vertical) and postoperative status at 2-year follow-up (horizontal).
Additionally, at three months post-injection the first patient in this cohort had demonstrated neurological improvement progressing from a complete ASIA Impairment Scale (AIS) A injury to an incomplete AIS C injury.
The patient has progressed from a complete ASIA Impairment Scale (AIS) A injury to an incomplete AIS B injury.

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