Summary
Spinal cord durotomy is performed as a diagnostic aid in determining spinal cord structural
integrity, and this may be useful as an indicator of prognosis in cases with loss
of deep pain perception (DPP). It has been suggested that a durotomy may relieve intramedullary
compression but there is some debate about the therapeutic value. The purpose of this
study was to compare ambulatory outcome of dogs that had loss of DPP treated with
hemilaminectomy with durotomy versus hemilaminectomy without durotomy. Medical records
of 81 dogs diagnosed with type I thoracolumbar IVD were reviewed. Dogs were included
in the study if DPP was absent upon initial neurological examination and surgical
decompression via hemilaminectomy was performed. Of the 81 cases, 48 were included
in this study. The number of dogs that recovered ambulatory function were compared
between durotomy and nondurotomy groups with a chi-squared test (p<0.05). No differences
were found. The findings of this study suggest that durotomy is useful as a diagnostic
modality and that performing a durotomy does not significantly affect post-operative
recovery of voluntary motor function.
Keywords
Durotomy - deep pain perception - hemilaminectomy - thoracolumbar