FIG. 4.

Fractional anisotropy (FA) value versus location (μm) as a function of injury severity. Values are averaged within groups and reported as mean±standard error. Two-way analysis of variance with post-hoc analysis accounting for injury severity and location revealed no significant difference between moderate and severe injury groups (#) although all other group comparisons were significant (p<0.05). At all locations along the spinal cord, all injury severities revealed statistically significant differences from sham injury animals (^; p<0.05). There were no significant differences in FA values between injury groups at the injury epicenter (&). FA values for mild injury animals were significantly different from moderate and severe injury animals at all caudal locations but only at a single rostral location (*; p<0.05). Color image is available online at www.liebertpub.com/neu