A;Complete;"No motor or sensory function in the lowest sacral segment"
B;Incomplete;"Sensory function below neurological level and in S4 S5, no motor function below the neurological level"
C;Incomplete;"Motor function is preserved below neurological level; key muscle groups below neurological level have grade <3"
D;Incomplete;"Motor function is preserved below neurological level; key muscle groups below neurological level have grade >3"
E;Normal;"Normal motor and sensory function"