Spinal cord
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In our clinical training program, which includes probable American Spinal Injury Association impairment scale (AIS) grade changes in the event of recovery, we have noticed some confounding results regarding the AIS grading in spinal cord injury (SCI) patient case examples who are expected to recover. We also observed an individual case that showed a conflict between AIS grade conversion and neurological changes in European Multicenter Study on Human Spinal Cord Injury study. ⋯ When recovery occurs without observing any motor or sensory changes while taking only the AIS into account, it would be possible to make an incorrect conclusion. This is most likely an indication of a limitation of the AIS. To enlighten this paradox, the large amount of data in SCI databases should be reanalyzed.