The ASIA Impairment Scale includes five SCI categories, shown below. After a SCI, your function depends on both the location (neck, chest, or low back) and severity (complete or incomplete) of the injury. For example, many people with an injury to the neck have resulting tetraplegia, but more often than not, tetraplegia is incomplete. If this incomplete tetraplegia has an ASIA C or D level of impairment, then walking may be possible. On the other hand, most of the injuries to the upper chest and back that result in paraplegia are often complete (ASIA A). In this case, walking is less likely.