Ventral Slot Surgery to Manage Cervical Intervertebral Disc Disease in Three Cats

Abstract

Objective This case series describes the clinical presentation, management and outcome of three cats diagnosed with cervical intervertebral disc disease that underwent decompressive ventral slot surgery.

Methods This is a retrospective case series evaluating client-owned cats undergoing a ventral slot surgical procedure to manage cervical intervertebral disc disease (n = 3).

Results A routine ventral slot surgery was performed in each case without complication, resulting in postoperative neurological improvement in all three cases.

Clinical Significance Ventral slot surgery can be used to achieve effective cervical spinal cord decompression with a good long-term outcome in the management of feline cervical intervertebral disc herniation. To avoid creating an excessively wide slot with the potential for postoperative complications including vertebral sinus haemorrhage, vertebral instability or ventral slot collapse, careful surgical planning was performed with preoperative measurement of the desired maximum slot dimensions.

Keywords

feline - cervical disc - ventral slot

Author Contribution

Conception of the study: A. Crawford, R. Cappello, S. De Decker; Study design: A. Crawford, R. Cappello, A. Alexander, S. De Decker; Acquisition of data: A. Crawford, R. Cappello, A. Alexander, S. De Decker; Data analysis and interpretation: A. Crawford, R. Cappello, S. De Decker. All authors drafted and revised the manuscript and approved the submitted manuscript.

• References

• 1 De Decker S, Warner AS, Volk HA. Prevalence and breed predisposition for thoracolumbar intervertebral disc disease in cats. J Feline Med Surg 2017; 19 (04) 419-423
• 2 Muñana KR, Olby NJ, Sharp NJ, Skeen TM. Intervertebral disk disease in 10 cats. J Am Anim Hosp Assoc 2001; 37 (04) 384-389
• 3 Bergknut N, Egenvall A, Hagman R. , et al. Incidence of intervertebral disk degeneration-related diseases and associated mortality rates in dogs. J Am Vet Med Assoc 2012; 240 (11) 1300-1309
• 4 Bray JP, Burbidge HM. The canine intervertebral disk: part one: structure and function. J Am Anim Hosp Assoc 1998; 34 (01) 55-63
• 5 Knipe MF, Vernau KM, Hornof WJ, LeCouteur RA. Intervertebral disc extrusion in six cats. J Feline Med Surg 2001; 3 (03) 161-168
• 6 Hansen HJ. A pathologic-anatomical interpretation of disc degeneration in dogs. Acta Orthop Scand 1951; 20 (04) 280-293
• 7 Bergknut N, Smolders LA, Grinwis GC. , et al. Intervertebral disc degeneration in the dog. Part 1: Anatomy and physiology of the intervertebral disc and characteristics of intervertebral disc degeneration. Vet J 2013; 195 (03) 282-291
• 8 Kathmann I, Cizinauskas S, Rytz U, Lang J, Jaggy A. Spontaneous lumbar intervertebral disc protrusion in cats: literature review and case presentations. J Feline Med Surg 2000; 2 (04) 207-212
• 9 Lu D, Lamb CR, Wesselingh K, Targett MP. Acute intervertebral disc extrusion in a cat: clinical and MRI findings. J Feline Med Surg 2002; 4 (01) 65-68
• 10 Macias C, McKee WM, May C, Innes JF. Thoracolumbar disc disease in large dogs: a study of 99 cases. J Small Anim Pract 2002; 43 (10) 439-446
• 11 Maritato KC, Colon JA, Mauterer JV. Acute non-ambulatory tetraparesis attributable to cranial cervical intervertebral disc disease in a cat. J Feline Med Surg 2007; 9 (06) 494-498
• 12 Cherrone KL, Dewey CW, Coates JR, Bergman RL. A retrospective comparison of cervical intervertebral disk disease in nonchondrodystrophic large dogs versus small dogs. J Am Anim Hosp Assoc 2004; 40 (04) 316-320
• 13 Rossmeisl Jr JH, White C, Pancotto TE, Bays A, Henao-Guerrero PN. Acute adverse events associated with ventral slot decompression in 546 dogs with cervical intervertebral disc disease. Vet Surg 2013; 42 (07) 795-806
• 14 Smith BA, Hosgood G, Kerwin SC. Ventral slot decompression for cervical inter-vertebral disc disease in 112 dogs. Aust Vet Practit 1997; 27 (02) 58-64
• 15 Sharp NJH, Wheeler SJ. , eds. Cervical disc disease. In: Small Animal Spinal Disorders Diagnosis and Surgery. 2nd ed. New York: Elsevier Mosby; 2005: 96-99
• 16 Lemarié RJ, Kerwin SC, Partington BP, Hosgood G. Vertebral subluxation following ventral cervical decompression in the dog. J Am Anim Hosp Assoc 2000; 36 (04) 348-358
• 17 Fitch RB, Kerwin SC, Hosgood G. Caudal cervical intervertebral disk disease in the small dog: role of distraction and stabilization in ventral slot decompression. J Am Anim Hosp Assoc 2000; 36 (01) 68-74
• 18 Downes CJ, Gemmill TJ, Gibbons SE, McKee WM. Hemilaminectomy and vertebral stabilisation for the treatment of thoracolumbar disc protrusion in 28 dogs. J Small Anim Pract 2009; 50 (10) 525-535
• 19 Whittle IR, Johnston IH, Besser M. Recording of spinal somatosensory evoked potentials for intraoperative spinal cord monitoring. J Neurosurg 1986; 64 (04) 601-612
• 20 Taylor-Brown FE, Cardy TJ, Liebel FX. , et al. Risk factors for early post-operative neurological deterioration in dogs undergoing a cervical dorsal laminectomy or hemilaminectomy: 100 cases (2002-2014). Vet J 2015; 206 (03) 327-331
• 21 Dixon A, Fauber AE. Effect of anesthesia-associated hypotension on neurologic outcome in dogs undergoing hemilaminectomy because of acute, severe thoracolumbar intervertebral disk herniation: 56 cases (2007-2013). J Am Vet Med Assoc 2017; 250 (04) 417-423