The ASIA exam has been replaced by the ISNCSCI (International Standards for Neurologic Classification of Spinal Cord Injury) which is nearly identical. It is the internationally used assessment for determining level of and completeness (AIS = ASIA Impairment Score, which is part of the ISNCSI) of SCI. Canadian SCI providers have been a member of ASIA for many years, and they are also a member of ISCoS (International Spinal Cord Society), which has embraced and uses the ISNCSCI as well (which is why the name was changed). Any provider who says they are an expert in SCI should be proficient in administration of the ISNCSCI too, and if not, can get free training in its use on the ASIA.org website.
Prior the development of the ASIA tool (in the early 1980s; with 2 major revisions since) there was the Frankel Grade, which only looked at completeness (not level of injury), which would have been used by such experts from the 1960s on...
An excellent review of some of this history can be found here:
http://www.nature.com/sc/journal/v48...c2009198a.html
(KLD)