By American Spinal injury Association(ASIA) definition, the criteria for complete spinal cord injury depends on the neurological level of injury(or neurological level) and the sensory and motor function in the lowest sacral segment. This study was designed to investigate average neurological level, zone of partial preservation(SPP), and total motor score by using the ASIA's 1992 revised "Standards for Neurological and Functional Classification of Spinal Cord Injury" in complete paraplegics. We evaluated thirty-two complete paraplegics, We converted classification of the patients from October, 1991 to April, 1992 by using the 1989 revision of the ASIA standards to the 1992 revised standards. In designing the method, we gave a serial score corresponding to the spinal cord segment from C1(1) to S4(29).

The average neurological level of sensory for the complete paraplegics was 17.06(proximal part in Y9 segment)±3.26(segments) and motor level at 17.77(distal part in T9 segment)±3.01(segments). The average difference between the sensory and motor level was -0.63±1.68(segments). Sensory level of the neurological level was significantly higher about 1 segment than motor level(p<0.05). The average extent of ZPP sensory and ZPP motor was 2.31±1.84(segments) and 2.31±1.96(segments), respectively. However, he difference between ZPP sensory and ZPP motor was not significant. The mean total motor score for the complete paraplegics was 52.44±6.11.