Signalment Four year-old female spayed Dachshund
Chief Complaint Hind limb paralysis
Onset Yesterday
Course Dog was playing in yard during the day. That night the dog began to arch its back and cry out. Later that night the dog had trouble standing in the rear limbs. This morning the dog was not able to walk.
Past Pertinent History None. Always healthy.
Physical Exam No significant findings
Neurologic Exam Non-ambulatory paraparalysis. The dog had increased reflexes (3+), increased tone in the rear limbs, and had normal deep pain perception. There was a T13-L1 sensory level.
Neuroanatomic Localization T3-L3 myelopathy
Differential Diagnosis Type 1 intervertebral disc extrusion. Other differentials should be kept in the mind irrespective of the breed such as fractures, discospondylitis/ osteomyelitis, hemorrhage, cyst, and tumor.
Diagnostics CBC, chemistry panel, U/A were all normal
MRI Hypointense mass lesion ventral to the overlying spinal cord at the level of L1-2 IVD space on the sagittal T2WI. There is marked compression of the spinal cord at its ventral aspect on the axial T2WI. This is consistent with marked, ventral IVD protrusion at L1-2 IVD space.
Treatment Left lateral hemilaminectomy was performed and a large amount of type 1 disc material was removed.
Outcome The dog improved incrementally after surgery and was walking normal 1 month post-operatively.


Lumbar Spine – T2 sagittal image. A large L1-2 intervertebral disc herniation is noted.