Intervertebral Disc Disease (IVDD) is one of the most frequently encountered neurologic conditions in small animal practice, and its prevalence is particularly high in chondrodystrophic breeds such as the Dachshund (Teckel). Due to their unique genetic and anatomical predisposition, Dachshunds often present with acute spinal cord compression requiring timely surgical intervention.

This article is intended as a concise yet comprehensive surgical reference for veterinarians, focusing on the hemilaminectomy procedure, which remains the most commonly performed decompressive surgery for thoracolumbar IVDD in Dachshunds. The goal is to provide a structured overview of preoperative evaluation, surgical approach, technical considerations, postoperative management, and expected outcomes, allowing clinicians to approach these cases with greater confidence and consistency.

1) Clinical Background: IVDD in the Dachshund

Breed-Specific Considerations

Dachshunds are genetically predisposed to Hansen Type I IVDD due to premature degeneration and mineralization of the nucleus pulposus. This degeneration is strongly associated with FGF4 retrogene insertions, leading to early disc calcification and acute disc extrusion.

Key clinical implications include:

• Early age of onset (often 3–7 years)

• High likelihood of acute neurologic deterioration

• Frequent thoracolumbar involvement (T11–L3)

• Increased recurrence risk across the lifespan

Given these factors, surgical decompression is often indicated earlier and more frequently in Dachshunds compared to non-chondrodystrophic breeds.

2) Indications for Surgical Intervention

Hemilaminectomy is typically indicated in Dachshunds presenting with:

• Non-ambulatory paraparesis or paraplegia

• Progressive neurologic deterioration despite medical management

• Severe spinal pain refractory to conservative therapy

• Loss or impending loss of deep pain sensation

• Imaging-confirmed focal disc extrusion with spinal cord compression

Early surgical intervention—particularly within 24–48 hours of neurologic decline—has been consistently associated with improved functional recovery, especially when deep pain sensation is preserved.

3) Preoperative Evaluation and Diagnostic Workup

Neurologic Examination

A complete neurologic exam is essential to:

• Localize the lesion (neuroanatomic diagnosis)

• Grade neurologic severity

• Establish baseline function for postoperative comparison

Standard IVDD grading systems (e.g., modified Frankel or Texas Spinal Cord Injury Scale) are commonly used to guide prognosis and treatment planning.

Advanced Imaging

Magnetic Resonance Imaging (MRI) is considered the gold standard for IVDD diagnosis due to its superior soft-tissue contrast and ability to:

• Identify disc extrusion vs protrusion

• Assess degree of spinal cord compression

• Detect intramedullary changes (edema, hemorrhage, myelomalacia)

• Plan surgical approach precisely

Computed Tomography (CT), particularly CT-myelography, may be used when MRI is unavailable, especially in mineralized disc extrusions common in Dachshunds.

Preoperative Stabilization

Prior to surgery, patients should be stabilized with:

• Appropriate analgesia (opioids ± adjuncts)

• Bladder management if urinary retention is present

• Careful handling and strict confinement

• Corticosteroid use remains controversial and is typically avoided or limited depending on clinician preference and timing

4) Surgical Anatomy and Approach in the Dachshund

Anatomical Considerations

The Dachshund’s elongated spine and narrow vertebral canal require meticulous surgical planning. Key anatomical points include:

• Relatively narrow laminae

• Prominent epaxial musculature

• Increased risk of multilevel disc disease

• Close proximity of neurovascular structures

Understanding breed-specific spinal proportions is essential to avoid excessive bone removal or iatrogenic instability.

5) Hemilaminectomy: Surgical Technique

 

Step 1: Patient Positioning and Preparation

• The patient is positioned in sternal or lateral recumbency, depending on surgeon preference and lesion location.

• The spine is flexed slightly to open the interlaminar spaces.

• Standard aseptic preparation and draping are performed.

Step 2: Surgical Access

• A paramedian skin incision is made over the affected vertebral segment.

• Epaxial muscles are bluntly dissected and retracted laterally to expose the lamina and articular facets.

• Hemostasis is maintained carefully to preserve visualization.

Step 3: Hemilaminectomy (Decompression)

• A high-speed burr or Kerrison rongeurs are used to remove a portion of the lamina and pedicle on the affected side.

• The goal is to expose the spinal canal while preserving as much structural integrity as possible.

• Extruded disc material is carefully removed using fine instruments under magnification.

In Dachshunds, disc material is often firm and mineralized, requiring cautious manipulation to avoid spinal cord trauma.

Step 4: Disc Fenestration (Optional but Common)

Fenestration of adjacent discs is often performed prophylactically in Dachshunds to:

• Reduce recurrence risk

• Remove degenerated nucleus pulposus material

This step remains somewhat controversial but is widely practiced in high-risk breeds.

Step 5: Closure

• Muscular layers are closed routinely, ensuring minimal dead space.

• Subcutaneous tissue and skin are closed in standard fashion.

• Drain placement is uncommon but may be considered in cases with extensive dissection.

6) Postoperative Care and Rehabilitation

Immediate Postoperative Management

Key priorities include:

• Multimodal pain control (opioids, gabapentin, NSAIDs when appropriate)

• Bladder management (manual expression or catheterization)

• Monitoring for ascending/descending myelomalacia

• Temperature, hydration, and neurologic status monitoring

Activity Restriction

Strict confinement is typically recommended for 4–6 weeks, even in surgically treated patients, to allow:

• Soft tissue healing

• Reduction of inflammation

• Prevention of secondary injury

Rehabilitation and Physiotherapy

Evidence supports the role of structured rehabilitation in improving outcomes:

• Passive range-of-motion exercises

• Assisted standing and walking

• Underwater treadmill therapy

• Neuromuscular stimulation

Early but controlled rehabilitation is associated with faster functional recovery and improved long-term mobility.

7) Complications and Risk Management

Potential complications include:

• Surgical site infection

• Hemorrhage

• Persistent neurologic deficits

• Recurrence of disc disease

• Progressive myelomalacia (rare but catastrophic)

Close postoperative monitoring and client education are critical to early detection and intervention.

8) Prognosis and Outcomes

Prognosis following hemilaminectomy in Dachshunds depends primarily on:

• Neurologic status at time of surgery

• Preservation of deep pain sensation

• Duration of clinical signs prior to intervention

• Presence of intramedullary MRI changes

Reported success rates:

• Ambulatory recovery in dogs with intact deep pain: 85–95%

• Recovery in dogs without deep pain at presentation: 50–60%, depending on timing and severity

Long-term quality of life is generally favorable when surgery is performed promptly and followed by appropriate rehabilitation.

9) Clinical Pearls for Veterinarians

• Time is spinal cord: early referral and intervention matter

• Dachshunds should be treated as a high-risk surgical population

• MRI-guided planning significantly improves surgical precision

• Hemilaminectomy remains the gold standard for acute thoracolumbar extrusions

• Owner compliance with postoperative care is critical for success

Conclusion

Hemilaminectomy is a cornerstone surgical procedure in the management of IVDD in Dachshunds. Given the breed’s genetic predisposition and unique spinal anatomy, veterinarians must approach these cases with a clear understanding of disease pathophysiology, surgical principles, and postoperative care requirements.

This guide provides a structured reference to support clinical decision-making and surgical planning, helping veterinarians deliver effective, evidence-based care for one of the most common and impactful neurologic conditions in the Dachshund.