Treatment Strategies in Canine Intervertebral Disc Disease

Intervertebral disc extrusions in dogs can be managed either medically or surgically, with treatment decisions primarily guided by neurological status, lesion location, and progression of clinical signs¹. A structured and case-specific approach is essential to optimize outcomes and minimize long-term neurological deficits. 

Thoracolumbar Disc Extrusions: Clinical Management Strategy 

Medical Management 

Conservative therapy includes strict restriction of physical activity and multimodal analgesia. Activity restriction for at least four weeks is essential to allow annular fibrosis and stabilization. Pain control typically involves NSAIDs for 5–7 days, gabapentin or pregabalin for neuropathic pain, and muscle relaxants such as diazepam or methocarbamol when indicated. 

The use of corticosteroids remains controversial and is not routinely recommended, although selective use may be considered based on clinical judgment. Persistent pain beyond the acute phase warrants reassessment for surgical intervention^1,2. 

Medical management may be successful in ambulatory dogs; however, recurrence rates range from 15% to 66%³. In paraplegic dogs without deep pain perception, outcomes are poor, and the risk of Progressive Myelomalacia (PMM) increases, making surgery the preferred option^2,4. 

A recent report suggests that up to 96% of ambulatory dogs and 48% of non-ambulatory dogs may regain ambulation following conservative treatment under appropriate conditions⁵. 

Surgical Management 

Surgical decompression is indicated in cases of progressive neurological decline, persistent pain, or absence of response to medical therapy. Common techniques include hemilaminectomy, mini-hemilaminectomy, dorsal laminectomy, and intervertebral disc fenestration, with hemilaminectomy being the most widely used due to its accessibility and efficacy^1,2. 

Although early decompression is generally recommended in severe cases, there is no strict timing consensus. Importantly, prolonged paralysis should not preclude surgery, as functional recovery remains possible even after extended durations without deep pain perception¹. 

Prophylactic fenestration is frequently performed during decompression to reduce recurrence risk. This may include affected and adjacent disc spaces (typically T11–L4), particularly in predisposed breeds such as Dachshunds and French Bulldogs¹. However, routine fenestration is not recommended caudal to L4–L5 or cranial to T10–T11 due to anatomical and risk limitations¹. 

Postoperative care includes at least four weeks of confinement, structured rehabilitation, and multimodal analgesia. Additional techniques such as epidural morphine, erector spinae blockade, and pulsed electromagnetic field therapy may improve pain control². 

Key Complication: Progressive Myelomalacia (PMM) 

PMM is a severe, rapidly progressive necrotizing spinal cord condition occurring within 24 hours to 14 days post-injury. It affects 10–33% of paraplegic dogs without deep pain perception [64]. Diagnosis is based on clinical signs such as ascending paralysis, hypoventilation, cranial migration of cutaneous reflexes, and systemic autonomic dysfunction, often supported by imaging and biomarkers (GFAP, pNfH)^6,7. 

Cervical Disc Extrusions: Treatment Considerations 

Medical management is similar to thoracolumbar IVDD. Surgical intervention is indicated in cases of severe pain, neurological deterioration, or recurrence. 

Surgical techniques include ventral slot decompression, hemilaminectomy, dorsal laminectomy, and ventral fenestration. The ventral slot technique is most commonly preferred due to direct access to ventrally located disc material. Multiple slot procedures do not negatively affect prognosis, and recurrence rates remain low (0–17%)¹. 

Postoperative care mirrors thoracolumbar management protocols. 

Conclusion 

Treatment of IVDD requires individualized decision-making based on neurological severity, lesion location, and response to therapy. While conservative management may be effective in selected cases, surgical decompression remains the gold standard for moderate to severe neurological deficits. Early intervention, appropriate surgical planning, and structured postoperative care significantly improve neurological recovery and long-term outcomes.  

Reference 

1. Gómez Álvarez I, Verdes García JM, Espino López L. Intervertebral disc disease in dogs. InPets 2025 Jun 20 (Vol. 2, No. 3, p. 26). MDPI. https://www.mdpi.com/2813-9372/2/3/26 

2. Olby NJ, Moore SA, Brisson B, Fenn J, Flegel T, Kortz G, Lewis M, Tipold A. ACVIM consensus statement on diagnosis and management of acute canine thoracolumbar intervertebral disc extrusion. Journal of Veterinary Internal Medicine. 2022 Sep;36(5):1570-96. https://academic.oup.com/jvim/article-pdf/36/5/1570/66665225/jvim16480.pdf 

3. Moore SA, Tipold A, Olby NJ, Stein V, Granger N, Canine Spinal Cord Injury Consortium (CANSORT SCI). Current approaches to the management of acute thoracolumbar disc extrusion in dogs. Frontiers in veterinary science. 2020 Sep 3;7:610. https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2020.00610/pdf 

4. Lewis MJ, Jeffery ND, Olby NJ, Canine Spinal Cord Injury Consortium (CANSORT-SCI). Ambulation in dogs with absent pain perception after acute thoracolumbar spinal cord injury. Frontiers in veterinary science. 2020 Aug 26;7:560. https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2020.00560/pdf 

5. Khan S, Jeffery ND, Freeman P. Recovery of ambulation in small, nonbrachycephalic dogs after conservative management of acute thoracolumbar disk extrusion. Journal of Veterinary Internal Medicine. 2024 Sep 1;38(5):2603-11. https://academic.oup.com/jvim/article-pdf/38/5/2603/66662052/jvim17149.pdf 

6. Castel A, Olby NJ, Ru H, Mariani CL, Muñana KR, Early PJ. Risk factors associated with progressive myelomalacia in dogs with complete sensorimotor loss following intervertebral disc extrusion: a retrospective case-control study. BMC veterinary research. 2019 Dec 3;15(1):433. https://link.springer.com/content/pdf/10.1186/s12917-019-2186-0.pdf 

7. Castel A, Olby NJ, Mariani CL, Muñana KR, Early PJ. Clinical characteristics of dogs with progressive myelomalacia following acute intervertebral disc extrusion. Journal of veterinary internal medicine. 2017 Nov;31(6):1782-9. https://academic.oup.com/jvim/article-pdf/31/6/1782/66668685/jvim14829.pdf