Figure 7.

Microscopic observations in the 6-wk-old group. (A and B) Longitudinal sections of the dislocated end of the spinal column with spinal cord. (A) The articular surface of the vertebra was intact (black arrowhead, score = 0), subdural, subarachnoid, and parenchymal hemorrhages were moderate (back asterisk, score = 2). Spinal cord (Sc) was rarefied and fragmented near the site of dislocation. (B) Multiple fractures were effacing the vertebral edges (black arrowhead, score = 3), severe hemorrhage effaces meningeal compartment, and spinal canal (black asterisks, score = 3). The spinal cord (Sc) was fragmented and retracted into the canal. (C and D). Transversal sections of spinal column at 0.5 cm from the dislocated edge. (C) Mild subdural hemorrhage was present (black asterisk, score = 1). The spinal cord was mildly rarefied (score =1). (D) Presence of severe subdural and subarachnoidal hemorrhage (score = 3) which extends to the adjacent connective tissue. These were accompanied by moderate demyelination and rarefaction of the spinal cord. All scale bars (right bottom corner) are 500 um. Histopathological samples were assembled in Adobe Acrobat.