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Vet Comp Orthop Traumatol 2012; 25(02): 109-115
DOI: 10.3415/VCOT-11-05-0075
Original Research
Schattauer GmbH

Residual herniated disc material following hemilaminectomy in chondrodystrophic dogs with thoracolumbar intervertebral disc disease

W. J. Roach
1   Nashville Veterinary Specialists, Nashville, Tennessee, USA
,
M. Thomas
2   Mississippi State University, Department of Radiology, Starkville, Mississippi, USA
,
J. M. Weh
3   University of Georgia, College of Veterinary Medicine, Small Animal Medicine and Surgery, Athens, Georgia, USA
,
J. Bleedorn
4   University of Wisconsin, School of Veterinary Medicine, Small Animal Surgery, Madison, Wisconsin, USA
,
K. Wells
5   Dallas Veterinary Surgical Center, Dallas, Texas, USA
› Author Affiliations
Further Information

Publication History

Received 17 May 2011

Accepted 22 January 2011

Publication Date:
23 December 2017 (online)

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Summary

Objective: To evaluate the presence of residual disc material within the vertebral canal following hemilaminectomy in chondrodystrophic dogs with thoracolumbar intervertebral disc disease.

Methods: Forty dogs were treated by hemilaminectomy. Computed tomography was performed preoperatively and immediately postoperatively. The vertebral canal height, width, area, and herniated disc material area were measured. Maximum filling percentage (MFP), residual disc percentage (RDP), maximum residual filling percentage (MRFP), and residual filling percentage (RFP) were calculated. Clinical outcome was determined by telephone interviews.

Results: Residual disc material was present in 100% of the dogs. Mean MFP = 55.4% (range 25.9–82.3%; median 56.9%). Mean RDP = 50.3% (range 2.6–155.8%; median 47.9%). Mean MRFP = 30.8% (range 4.9–60%; median 30.1%). Mean RFP = 19.8% (range 4.8–45%; median 19.0%). All dogs were ambulatory with voluntary urination at the long-term follow-up (range: 88–735 days).

Clinical significance: Residual disc was present in all dogs following hemilaminectomy for intervertebral disc disease. Residual disc was not associated with failure to achieve functional recovery in these cases.

Keywords

Residual disc - intervertebral disc disease - hemilaminectomy - computed tomography
 

  • References

  • 1 Brisson BA, Moffatt SL, Swayne SL. et al. Recurrence of thoracolumbar intervertebral disk extrusion in chondrodystrophic dogs after surgical decompression with or without prophylactic fenestration: 265 cases (1995-1999). J Am Vet Med Assoc 2004; 224: 1808-1814.
    CrossrefPubMedSearch in Google Scholar
  • 2 Forterre F, Konar M, Spreng D. et al. Influence of intervertebral disc fenestration at the herniation site in association with hemilaminectomy on recurrence in chondrodystrophic dogs with thoracolumbar disc disease: a prospective MRI study. Vet Surg 2008; 37: 399-405.
    CrossrefPubMedSearch in Google Scholar
  • 3 Olby N, Harris T, Burr J. et al. Recovery of pelvic limb function in dogs following acute intervertebral disc herniations. J Neurotrauma 2004; 21: 49-59.
    CrossrefPubMedSearch in Google Scholar
  • 4 Ruddle TL, Allen DA, Schertel ER. et al. Outcome and prognostic factors in non-ambulatory Hansen Type I intervertebral disc extrusions: 308 cases. Vet Comp Orthop Traumatol 2006; 19: 29-34.
    Thieme ConnectPubMedSearch in Google Scholar
  • 5 Scott HW. Hemilaminectomy for the treatment of thoracolumbar disc disease in the dog: a follow-up study of 40 cases. J Small Anim Pract 1997; 38: 488-494.
    CrossrefPubMedSearch in Google Scholar
  • 6 Muir P, Johnson KA, Manley PA. et al. Comparison of hemilaminectomy and dorsal laminectomy for thoracolumbar intervertebral disc extrusion in dachshunds. J Small Anim Pract 1995; 36: 360-367.
    CrossrefPubMedSearch in Google Scholar
  • 7 Olby NJ, Munana KR, Sharp NJH. et al. The computed tomographic appearance of acute thoracolumbar intervertebral disc herniation in dogs. Vet Radiol Ultrasound 2000; 41: 396-402.
    CrossrefPubMedSearch in Google Scholar
  • 8 Besalti O, Ozak A, Pekcan Z. et al. The role of extruded disk material in thoracolumbar intervertebral disk disease: A retrospective study in 40 dogs. Can Vet J 2005; 46: 814-820.
    PubMedSearch in Google Scholar
  • 9 Penning V, Platt SR, Dennis R. et al. Association of spinal cord compression seen on magnetic resonance imaging with clinical outcome in 67 dogs with thoracolumbar intervertebral disc extrusion. J Small Anim Pract 2006; 47: 644-650.
    CrossrefPubMedSearch in Google Scholar
  • 10 Ryan TM, Platt SR, Llabres-Diaz FJ. et al. Detection of spinal cord compression in dogs with cervical intervertebral disc disease by magnetic resonance imaging. Vet Rec 2008; 163: 11-15.
    CrossrefPubMedSearch in Google Scholar
  • 11 Sukhiani HR, Parent JM, Atilola MAO. et al. Intervertebral disc disease in dogs with signs of back pain alone: 25 cases (1986-1993). J Am Vet Med Assoc 1996; 209: 1275-1279.
    PubMedSearch in Google Scholar
  • 12 Hecht S, Thomas WB, Marioni-Henry K. et al. Myelography vs. computed tomography in the evaluation of acute thoracolumbar intervertebral disc extrusion in chondrodystrophic dogs. Vet Radiol Ultrasound 2009; 50: 353-359.
    PubMedSearch in Google Scholar
  • 13 Israel SK, Levine JM, Kerwin SC. et al. The relative sensitivity of computed tomography and myelography for identification of thoracolumbar intervertebral disk herniation in dogs. Vet Radiol Ultrasound 2009; 50: 247-252.
    CrossrefPubMedSearch in Google Scholar
  • 14 Sharp NJH, Wheeler SJ. Thoracolumbar disc disease. In: Small Animal Spinal Disorders: Diagnosis and Surgery. London: Mosby-Wolfe; 2005. pg. 121-159.
    Search in Google Scholar
  • 15 Dhupa S, Glickman N, Waters DJ. Reoperative neurosurgery in dogs with thoracolumbar disc disease. Vet Surg 1999; 28: 421-428.
    CrossrefPubMedSearch in Google Scholar
  • 16 Shultz KS, Walker M, Moon M. Correlation of clinical, radiographic, and surgical localization of intervertebral disc extrusion in small-breed dogs: a prospective study of 50 cases. Vet Surg 1998; 27: 105-111.
    CrossrefPubMedSearch in Google Scholar
  • 17 Forterre F, Gorgas D, Dickomeit M. et al. Incidence of Spinal Compressive Lesions in Chondrodystrophic Dogs with Abnormal Recovery after Hemilaminectomy fort Treatment of Thoracolumbar Disc Disease: A Prospective Magnetic Resonance Imaging Study. Vet Surg 2010; 39: 165-172.
    CrossrefPubMedSearch in Google Scholar
  • 18 Jones JC, Banfield CM, Ward DL. Association between postoperative outcome and results of magnetic resonance imaging and computed tomography in working dogs with degenerative lumbosacral stenosis. J Am Vet Med Assoc 2000; 216: 1769-1774.
    CrossrefPubMedSearch in Google Scholar
  • 19 Suwankong N, Voorhout G, Hazewinkel HA. et al. Agreement between computed tomography, magnetic resonance imaging, and surgical findings in dogs with degenerative lumbosacral stenosis. J Am Vet Med Assoc 2006; 229: 1924-1929.
    CrossrefPubMedSearch in Google Scholar
  • 20 Davies JV, Sharp NJH. A comparison of conservative treatment and fenestration for thoracolumbar intervertebral disc disease in the dog. J Small Anim Pract 1983; 24: 721-729.
    CrossrefPubMedSearch in Google Scholar
  • 21 Levine JM, Levine G, Johnson SI. et al. Evaluation of the success of medical management for presumptive thoracolumbar intervertebral disc herniation in dogs. Vet Surg 2007; 36: 482-491.
    CrossrefPubMedSearch in Google Scholar
  • 22 Levine JM, Fosgate GT, Chen AV. et al. Magnetic resonance imaging in dogs with neurologic impairment due to acute thoracic and lumbar intervertebral disk herniation. J Vet Intern Med 2009; 23: 1220-1226.
    CrossrefPubMedSearch in Google Scholar
  • 23 Mayhew PD, McLear RC, Ziemer LS. et al. Risk factors for recurrence of clinical signs associated with thoracolumbar intervertebral disk herniation in dogs: 229 cases (1994-2000). J Am Vet Med Assoc 2004; 225: 1231-1236.
    CrossrefPubMedSearch in Google Scholar
  • 24 Morgan JP, Atilola M, Bailey CS. Vertebral canal and spinal cord mensuration: a comparative study of its effect on lumbosacral myelography in the dachshund and German shepherd dog. J Am Vet Med Assoc 1987; 191: 951-957.
    PubMedSearch in Google Scholar