Varying degrees of contusive SCI were produced by dropping the 10 gm weight from the heights of 12.5, 25, and 50 mm.A, The compression rate calculated from weight-drop device measures was different among the three SCI groups. B, C, The hindlimb and locomotion behavioral tests done at 8 weeks after SCI indicated a significantly different level of somatic sensorimotor recovery as quantified by BBB (B) and CBS (C) in the 12.5 mm group compared with the more severe 25 and 50 mm groups. One asteriskindicates a significant difference from the 12.5 mm SCI group, andtwo asterisks indicate a difference between 25 and 50 mm groups, based on p < 0.05 in Tukey's post hoc test after ANOVA.