Neurological/Orthopedic Moderate to Critical Hereditary Dog

Intervertebral Disc Disease

Also known as: IVDD, Slipped Disc, Herniated Disc

Intervertebral Disc Disease (IVDD) occurs when the cushioning discs between vertebrae degenerate, bulge, or rupture into the spinal canal. This causes compression of the spinal cord or nerve roots, resulting in pain, nerve damage, and potentially paralysis. Type I (acute extrusion) is common in chondrodystrophic breeds; Type II (chronic protrusion) affects larger breeds.

Symptoms & Signs

Causes & Risk Factors

Type I: premature degeneration and calcification of the nucleus pulposus in chondrodystrophic breeds (Dachshund, Beagle, French Bulldog), leading to acute disc extrusion. Type II: chronic fibrous degeneration causing gradual disc protrusion, typically in larger breeds.

Diagnosis

Neurological examination localizes the lesion. Radiographs may show calcified disc material or narrowed disc spaces. MRI is the gold standard for visualizing disc herniation and spinal cord compression. CT myelography is an alternative.

Treatment

Conservative: strict cage rest (4-6 weeks), anti-inflammatory medications, pain management, physical rehabilitation. Surgical: hemilaminectomy or ventral slot to decompress the spinal cord. Surgery recommended for severe cases (Grade 3-5) or those failing conservative management.

Prevention

Weight management to reduce spinal loading. Avoiding high-impact activities (jumping off furniture) in predisposed breeds. Using ramps and harnesses. Genetic research into disc degeneration markers.

Prognosis

Grade 1-3 (pain to non-ambulatory with deep pain): >90% recovery with appropriate treatment. Grade 4 (non-ambulatory, no deep pain <24hrs): 50-60% recovery with surgery. Grade 5 (no deep pain >48hrs): <5% recovery.

Affected Breeds (3)

BreedSpeciesSize
BeagleDogMedium
DachshundDogMedium
Pembroke Welsh CorgiDogMedium

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