Hemivertebrae in Dogs

Category: Bone & Joint
Breeds documented: 4
Published sources: 7

Overview

Some bones that make up the spine develop with part of the bone missing or misshapen. These abnormal bones are called hemivertebrae and are present from birth. They may change the shape of the spine and narrow the space around the spinal cord. Many are found on scans in dogs that move normally, but some put pressure on the cord and cause weakness or difficulty walking.

Signs to watch for

Weakness in the back legs.
A wobbly, poorly coordinated walk.
Loss of bladder or bowel control in affected dogs.
Loss of the ability to stand or walk.

The bone changes are present at birth; associated walking problems may appear in young or adult dogs.

Emergency Go to an emergency vet now if your dog loses the ability to walk.

Diagnosis and tests

A veterinary examination checks walking, leg strength and other signs of spinal cord dysfunction. X-rays can identify abnormally shaped spinal bones. CT or MRI may be needed to examine the abnormality more closely and assess pressure on the spinal cord. These findings help a specialist decide whether surgery is appropriate.

Breeds with documented risk

4 breeds

By breed size

3 Small
1 Medium

French BulldogSmall · Non-Sporting Group
BulldogMedium · Non-Sporting Group
Boston TerrierSmall · Non-Sporting Group
PugSmall · Toy Group

Inheritance

Not yet known
None of the sources we use states how this is inherited in dogs yet.

We've gathered what published sources say about this condition, so you can talk it through with your vet. It isn't veterinary advice: you and your vet know your dog best.