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DOI: 10.1055/s-0037-1617374
Review and retrospective analysis of degenerative lumbosacral stenosis in 156 dogs treated by dorsal laminectomy
Publication History
Received: 25 February 2008
Accepted 24 April 2008
Publication Date:
12 January 2018 (online)
Summary
The medical records of 156 dogs with degenerative lumbosacral stenosis (DLS) that underwent decompressive surgery were reviewed for signalment, history, clinical signs, imaging and surgical findings. The German Shepherd Dog (GSD) was most commonly affected (40/156, 25.6%). Pelvic limb lameness, caudal lumbar pain and pain evoked by lumbosacral pressure were the most frequent clinical findings. Radiography showed lumbosacral step formation in 78.8% (93/118) of the dogs which was associated with elongation of the sacral lamina in 18.6% (22/118). Compression of the cauda equina was diagnosed by imaging (epidurography, CT, or MRI) in 94.2% (147/156) of the dogs. Loss of the bright nucleus pulposus signal of the L7-S1 disc was found on T2-weighted MR images in 73.5% (25/34) of the dogs. The facet joint angle at L7-S1 was significantly smaller, and the tropism greater in GSD than in the other dog breeds. The smaller facet joint angle and higher incidence of tropism seen in the GSD may predispose this breed to DLS. Epidurography, CT, and MRI allow adequate visualization of cauda equina compression. During surgery, disc protrusion was found in 70.5% (110/156) of the dogs. Overall improvement after surgery was recorded in the medical records in 79.0% (83/105) of the dogs. Of the 38 owners that responded to questionnaires up to five years after surgery, 29 (76%) perceived an improvement.
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References
- 1 Indrieri RJ. Lumbosacral stenosis and injury of the cauda equina.. Vet Clin North Am Small Anim Pract 1988; 18: 697-710.
- 2 Ness MG. Degenerative lumbosacral stenosis in the dog: A review of 30 cases.. J Small Anim Pract 1994; 35: 185-190.
- 3 Tarvin G, Prata RG. Lumbosacral stenosis in dogs.. J Am Vet Med Assoc 1980; 177: 154-159.
- 4 Wheeler SJ. Lumbosacral disease.. Vet Clin North Am Small Anim Pract 1992; 22: 937-950.
- 5 De Risio L, Thomas WB, Sharp NJH. Degenerative lumbosacral stenosis.. Vet Clin North Am Small Anim Pract 2000; 30: 111-132.
- 6 Watt PR. Degenerative lumbosacral stenosis in 18 dogs.. J Small Anim Pract 1991; 32: 125-134.
- 7 Morgan JP, Bailey C. Cauda equina syndrome in the dog: Radiographic evaluation.. J Small Anim Pract 1990; 31: 69-77.
- 8 Ramirez O, III Thrall DE. A review of imaging techniques for canine cauda equina syndrome.. Vet Radiol Ultrasound 1998; 39: 283-96.
- 9 Sisson AF, LeCouteur RA, Ingram JT, Park RD, Child G. Diagnosis of cauda equina abnormalities by using electromyography, discography, and epidurography in dogs.. J Vet Intern Med 1992; 6: 253-263.
- 10 Denny HR, Gibbs C, Holt PE. The diagnosis and treatment of cauda equina lesions in the dog.. J Small Anim Pract 1982; 23: 425-443.
- 11 Palmer RH, Chambers JN. Canine lumbosacral diseases. Part II: Definitive diagnosis, treatment, and prognosis.. Compend Contin Educ Pract Vet 1991; 13: 213-221.
- 12 Prata RG. Cauda equina syndrome.. In: Slatter D, editor. Textbook of small animal surgery. 2nd ed. Philadelphia: Saunders; 1993. pp 1094-1105.
- 13 Chambers JN. Degenerative lumbosacral stenosis in dogs.. Vet Med Rep 1989; 1: 166-180.
- 14 Sjöström L.. Lumbosacral disorders. Degenerative lumbosacral stenosis: Surgical decompression.. In: Slatter D, editor. Textbook of small animal surgery. 3rd ed. Elsevier Science, 2003 pp 1227-1237.
- 15 Slocum B, Devine T. L7-S1 fixation-fusion for treatment of cauda equina compression in the dog.. J Am Vet Med Assoc 1986; 188: 31-35.
- 16 Slocum B, Devine T. Optimal treatment for degenerative lumbosacral stenosis. Traction, internal fixation, and fusion.. Vet Med Report 1 1989; 249-257.
- 17 Slocum B, Devine T. L7-S1 fixation-fusion technique for cauda equina syndrome.. In: Bojrab MJ, editor. Current Techniques in Small Animal Surgery, 5th ed. Philadelphia: Lea&Febiger; 1998. pp 861-864.
- 18 Hazewinkel HAW, Meutstege FJ. Locomotor system.. In: Rijnberk A, de Vries HW, eds. Medical history and physical examination in companionanimals. Dordrecht: Kluwer Academic Publishers; 1995. pp 175-201.
- 19 Sharp NJH, Wheeler SJ. Lumbosacral disease.. In: Sharp NJH and Wheeler SJ, editors. Small animal spinal disorders. Diagnosis and surgery, 2nd ed, Elsevier Mosby, Edinburgh 2005 pp 181-209.
- 20 Noren R, Trafimow J, Andersson GB. et al. The role of facet joint tropism and facet angle in disc degeneration.. Spine 1991; 16: 530-532.
- 21 Morgan JP, Wind A, Davidson AP. Lumbosacral disease.. In: Hereditary bone and joint disease in the dog. Hannover: Schlötersche; 2000. pp 209-229.
- 22 Danielsson F, Sjöström L.. Surgical treatment of degenerative lumbosacral stenosis in dogs.. Vet Surg 1999; 28: 91-98.
- 23 Benninger MI, Seiler GS, Robinson LE. et al. Three-dimentional motion pattern of the caudal lumbar and lumbosacral portions of the vertebral column of dogs.. Am J Vet Res 2004; 65: 544-552.
- 24 Schmid V, Lang J. Measurements on the lumbosacral junction in normal dogs and those with cauda equina compression.. J Small Anim Pract 1993; 34: 437-442.
- 25 Seiler GS, Hani H, Busato AR. et al. Facetjoint geometry and intervertebral disk degeneration in the L5-S1 region of the vertebral column in German Shepherd Dogs.. Am J Vet Res 2002; 63: 86-90.
- 26 Benninger MI, Seiler GS, Robinson LE. et al. Effects of anatomic conformation of three-dimensional motion of the caudal lumbar and lumbosacral portions of the vertebral column of dogs.. Am J Vet Res 2006; 67: 43-50.
- 27 Boden SD, Riew KD, Yamakuchi K. et al. Orientation of the lumbar facet joints: association with degenerative disc disease.. J Bone Joint Surg-Am 1996; 78: 403-411.
- 28 Gruber HE, Gordon B, Williams C. et al. Bone mineral density of lumbar vertebral end plates in the aging male sand rat spine.. Spine 2003; 28: 1766-1772.
- 29 Morgan JP, Bahr A, Franti CE. et al. Lumbosacral transitional vertebrae as a predisposing cause of cauda equina syndrome in German Shepherd dogs: 161 cases (1987-1990).. J Am Vet Med Assoc 1993; 202: 1877-1882.
- 30 Morgan JP. Transitional lumbosacral vertebral anomaly in the dog: A radiographic study.. J Small Anim Pract 1999; 40: 167-172.
- 31 Hathcock JT. Vacuum phenomenon of the canine spine: CT findings in 3 patients.. Vet Radiol Ultrasound 1994; 35: 285-289.
- 32 Schwarz T, Owen MR, Long S. et al. Vacuum disk and facet phenomenon in a dog with cauda equina syndrome.. J Am Vet Med Assoc 2000; 217: 862-864.
- 33 Lang J. Flexion-extension myelography of the canine cauda equina.. Vet Radiol 1988; 29: 242-257.
- 34 Barthez PY, Morgan JP, Lipsitz D. Discography and epidurography for evaluation of the lumbosacral junction in dogs with cauda equina syndrome.. Vet Radiol Ultrasound 1994; 35: 152-157.
- 35 Feeney DA, Wise M. Epidurography in the normal dog: Technique and radiographic findings.. Vet Radiol 1981; 22: 35-39.
- 36 Lang J, Jaggy A. The radiographic examination on the canine cauda equina.. Eur J Comp Anim Pract 1993; 3: 40-47.
- 37 Adams WH, Daniel GB, Pardo AD. et al. Magnetic resonance imaging of the caudal lumbar and lumbosacral spine in 13 dogs (1990-1993).. Vet Radiol Ultrasound 1995; 36: 3-13.
- 38 Jones JC, Soijonen DC, Simpson ST. et al. Comparison between computed tomographic and surgical findings in nine large-breed dogs with lumbosacral stenosis.. Vet Radiol Ultrasound 1996; 37: 247-256.
- 39 Jones JC, Banfield CM, Ward DL. Association between postoperative outcome and results of magnetic resonance imaging and computed tomography in working dogs with degenerative lum bosacral stenosis.. J Am Vet Med Assoc 2000; 216: 1769-1774.
- 40 Meij BP, Voorhout G, Wolvekamp WTC. Epidural lipomatosis in a six-year-old Dachshund.. Vet Rec 1996; 138: 492-495.
- 41 Bennett D, Carmichael S, Griffiths IR. Discospondylitis in the dog.. J Small Anim Pract 1981; 22: 539-547.
- 42 Taga A, Taura Y, Nishimoto T. et al. The advantage of magnetic resonance imaging in diagnosis of cauda equina syndrome in dogs.. J Vet Med Sci 1998; 60: 1345-1348.
- 43 Oliver JE, Jr Selcer RR, Simpson S. Cauda equina compression from lumbosacral malarticulation and malformation in the dog.. J Am Vet Med Assoc 1978; 73: 207-214.
- 44 Chambers JN, Selcer BA, Oliver JE. Results of treatment of degenerative lumbosacral stenosis in dogs by exploration and excision.. Vet Comp Orthop Traumatol 1988; 3: 130-133.
- 45 De Risio L, Sharp NJ, Olby NJ. et al. Predictors of outcome after dorsal decompressive laminectomy for degenerative lumbosacral stenosis in dogs: 69 cases (1987-1997).. J Am Vet Med Assoc 2001; 219: 624-628.