Presented in part at the ESVOT Congress, Munich, Germany, September 2006.
Original Article - Clinical
Early Reherniation of Disk Material in Eleven Dogs with Surgically Treated Thoracolumbar Intervertebral Disk Extrusion
Article first published online: 21 NOV 2011
© Copyright 2011 by The American College of Veterinary Surgeons
Volume 41, Issue 2, pages 215–220, February 2012
How to Cite
Hettlich, B. F., Kerwin, S. C. and Levine, J. M. (2012), Early Reherniation of Disk Material in Eleven Dogs with Surgically Treated Thoracolumbar Intervertebral Disk Extrusion. Veterinary Surgery, 41: 215–220. doi: 10.1111/j.1532-950X.2011.00920.x
- Issue published online: 16 FEB 2012
- Article first published online: 21 NOV 2011
- Manuscript Accepted: OCT 2011
- Manuscript Received: NOV 2010
To report findings and outcomes of dogs with reherniation of nuclear material within 7 days of hemilaminectomy for acute thoracolumbar (TL) intervertebral disk extrusion.
Retrospective case series.
Chondrodystrophic dogs (n = 11).
Dogs with acute neurologic decline within 1 week of surgical decompression for TL disk extrusion were identified. Advanced imaging was used to document extradural spinal cord compression at the previous surgery site. Ten dogs had a 2nd decompressive surgery to remove extruded nuclear material.
All dogs had acute neurologic deterioration (average, 2 neurologic grades) 2–7 days after initial hemilaminectomy. Computed tomography (CT; n = 10) or myelography (n = 1) documented extradural spinal cord compression compatible with extruded disk material at the previous hemilaminectomy site. Dogs that had a 2nd surgical decompression improved neurologically within 24 hours and were paraparetic at discharge. The single dog that did not have decompressive surgery did not regain deep nociception during 185-day follow-up.
Early reherniation at the site of previous hemilaminectomy can produce acute deterioration of neurologic function and should be investigated with diagnostic imaging. Repeat decompressive surgery can lead to functional recovery.