Caudal articular process dysplasia in Dogs

Category: Bone & Joint
Breeds documented: 1
Published sources: 5

Overview

This developmental spinal abnormality leaves some of the joint projections on the backbones undersized or absent. The defect is considered present from birth. Many affected dogs have no related walking problems. In some Pugs, it has been associated with scar tissue tightening around the spinal cord, causing weakness and poor coordination in the back legs. The scan finding alone does not establish spinal cord disease.

Signs to watch for

Back-leg weakness when associated spinal cord disease develops
Wobbly, poorly coordinated back legs
Loss of movement in the back legs
Loss of bladder or bowel control

The bone defect is considered present from birth; associated spinal cord problems have been reported in adults.

Emergency Go to an emergency vet immediately if your dog has difficulty walking.

Diagnosis and tests

Computed tomography (CT), a detailed type of scan, can show which spinal joint projections are small or missing. Vets may also identify the abnormality on X-rays or magnetic resonance imaging (MRI) scans. When back-leg problems occur, examination and imaging help investigate associated spinal cord disease. The bone finding needs clinical interpretation because it also occurs in dogs without nerve-related signs.

Breeds with documented risk

1 breed

By breed size

1 Small

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.