Based on clinical insights from Dr. Matt Brunke, DVM, DACVS-SA, DACVSMR, CCRT in his webinar, “Empowering Vets to Treat More with Less Risk”*
When a client says “my dog doesn’t go upstairs anymore,” many veterinarians immediately think hip dysplasia. But what if the hips are normal? Lumbosacral disease—the canine equivalent of human sciatica—represents one of the most underdiagnosed conditions in veterinary practice.
The statistics are sobering: 27% of police dogs are retired or euthanized due to lumbosacral pathology, with average retirement dropping to 6.6 years instead of the target 8 years. For veterinary professionals managing canine spinal problems, recognizing this hidden epidemic is crucial for improving both diagnostic accuracy and patient outcomes.
The Effects of Dog Back Pain
Lumbosacral (LS) disease involves nerve root compression typically between L7-S1, affecting the most mechanically stressed segment of the canine spine. Unlike obvious conditions that present with dramatic lameness, dog back pain often manifests as subtle behavioral changes that owners attribute to “getting old.”
Critical Impact Statistics:
- 27% of working dogs retire early due to LS disease
- Average retirement age: 6.6 years (target was 8 years)
- Bilateral presentation: Common in chronic cases
Understanding the Disease Process
The L7-S1 junction bears the highest mechanical stress in the canine spine, making it vulnerable to multiple degenerative changes:
- Intervertebral disc degeneration: L7-S1 most commonly affected
- Ligamentum flavum hypertrophy: Spinal canal narrowing
- Facet joint arthritis: Secondary instability
- Foraminal stenosis: Nerve root compression
This multi-factorial pathology explains why how to diagnose back pain in dogs requires systematic evaluation rather than single diagnostic tests.
High-Risk Breeds and Critical Risk Factors
Primary Risk Breeds:
- German Shepherds: Highest documented prevalence
- Doberman Pinschers: Second highest risk
- Rhodesian Ridgebacks: Significant predisposition
- Great Danes: Large breed susceptibility
- Labrador Retrievers: Working and sporting lines
- Greyhounds: Despite excellent hip conformation
The Transitional Vertebrae Factor
Perhaps the most critical risk factor for dog back pain diagnosis is transitional vertebrae—a finding that dramatically alters prognosis.
Clinical Importance:
- 8x higher risk for developing degenerative LS disease
- Earlier onset: 1-2 years sooner than normal anatomy
- Increased hip dysplasia risk: Abnormal pelvic development
Types: Lumbarization, sacralization, or numerical variations (6 or 8 lumbar vertebrae instead of 7).
Diagnostic Examination Protocol
Dog back pain diagnosis requires moving beyond basic orthopedic assessment to include specific neurological tests that reveal lumbosacral pathology.
Pre-examination Essentials:
- Rule out hip dysplasia and stifle pathology
- Assess general neurological function
- Document gait abnormalities
Essential Lumbosacral Tests
Test 1 – Tail Jack Maneuver
The most reliable screening test for lumbosacral disease
Technique:
- Elevate tail to maximum comfortable extension
- Hold for 10-15 seconds
- Positive signs: Pain vocalization, attempts to move away, cessation of panting
Test 1 – Withdrawal Reflex Testing: The Game Changer
Often provides the earliest detectable sign of lumbosacral neuropathy
Critical Assessment:
- Pinch digits of each pelvic limb
- Normal response: Hip, stifle, AND hock flexion
- LS neuropathy: Hip and stifle flex, hock remains extended
- Early indicator: Often precedes obvious clinical signs
Test 3 – LS Space Palpation Technique:
- Locate L7-S1 junction (epidural landmark)
- Apply gentle downward pressure
- Observe for pain response, muscle guarding, breathing changes
Neurological Grading
Grade 1: Mild – Intermittent signs, normal withdrawal reflexes
Grade 2: Moderate – Consistent signs, delayed hock flexion
Grade 3: Severe – Constant pain, absent hock flexion
Radiographic Assessment Essentials
Standard Views Required:
- Lateral pelvis: L4 through coccygeal vertebrae
- Ventrodorsal pelvis: Complete visualization
- Extended views: T11 through sacrum for vertebral counting
Critical Findings:
- Disc space narrowing (L7-S1 most common)
- End plate sclerosis
- Step lesions (ventral displacement of L7)
- Osteophyte formation
Vertebral Counting Protocol:
- Start at T11 (last rib-bearing vertebra)
- Count to L7 (should be 7 lumbar vertebrae)
- Document any variations—transitional vertebrae dramatically alter prognosis
Dog Back Pain Treatment Strategies
Most cases of canine spinal problems respond well to systematic conservative management.
Phase 1: Acute Pain Control (0-2 weeks)
- Activity restriction: Leash walks only
- NSAIDs: If appropriate candidate
- Controlled environment: Prevent jumping, stairs
- Weight management: Critical for long-term success
Phase 2: Rehabilitation (2-8 weeks)
- Physical therapy: Controlled exercises
- PulseVet® shock wave therapy: 2-3 treatments bi-weekly
- Progressive activity increase: Gradual return to function
Pharmaceutical Options for Canine Lumbosacral Disease
First-Line Medications:
- Carprofen/Meloxicam: Anti-inflammatory effects
- Amantadine: NMDA receptor antagonist
- Gabapentin: Neuropathic pain component
PulseVet® Shock Wave Technology
Treatment Protocol for LS Disease:
- Frequency: 4-6 treatments, bi-weekly intervals
- Energy levels: Low-moderate (0.10-0.20 mJ/mm²)
- Target areas: Paravertebral muscles, LS junction
- Non-invasive treatment option
- Minimal Side effects
- Suitable for poor anesthetic candidates
- Can be combined with other therapies
Long-Term Management of Canine Lumbosacral Disease
Favorable Prognostic Factors: Early diagnosis, mild-moderate signs, owner compliance, normal vertebral anatomy
Poor Prognostic Factors: Severe neurological deficits, transitional vertebrae, poor compliance
Lifestyle Modifications for Dogs with Back Injuries
Essential Changes:
- Permanent weight management
- Avoid high-impact activities
- Ramp access for elevated surfaces
- Regular low-impact exercise
Monitoring Protocol:
- Quarterly examinations initially
- Annual radiographic assessment
- Withdrawal reflex monitoring
Canine Lumbosacral Disease: Key Takeaways
✅ LS disease is underdiagnosed – consider in all hind limb lameness cases
✅ Withdrawal reflex testing is crucial – often the earliest detectable sign
✅ Always count vertebrae – transitional vertebrae significantly increase risk
✅ Conservative management works – 60-70% success rate with proper protocol
✅ Weight management is essential – critical for long-term success
Implementing systematic evaluation protocols for dog back pain diagnosis can dramatically improve diagnostic accuracy and patient outcomes while providing specialized care that keeps working dogs operational and family pets comfortable.
For comprehensive training in PulseVet shock wave therapy protocols, explore pulsevet.com
*Dr. Matt Brunke was paid by Zomedica, Inc. to provide this webinar
