TL;DR: An abnormal spinal curve in dogs can range from a chronic issue to a medical emergency if accompanied by sudden weakness or inability to walk. Seek immediate veterinary care if your dog loses mobility or bladder control; otherwise, schedule an appointment within 48 hours.
What causes an abnormal spinal curve in my dog?
An abnormal curve in a dog’s spine, often referred to medically as kyphosis (a hunched back) or scoliosis (a sideways curve), is a visible deviation from the natural alignment of the vertebrae. This can be caused by congenital deformities, age-related degenerative disc disease, traumatic injury, or muscle spasms as the dog attempts to shift their weight away from a source of pain.
When is a curved spine in my dog considered a veterinary emergency?
- Schedule a vet visit within 24–48 hours: If your dog is still able to walk, eat, and use the bathroom normally.
- Seek immediate emergency care: If the spinal curve is accompanied by sudden hind-leg weakness, an inability to stand, dragging of the paws, or loss of bladder control.
How does taking a photo of my dog’s posture help the veterinarian?
- Provides an objective view: Capturing your dog standing naturally at home shows the spine's alignment in a relaxed environment.
- Overcomes masking: Prevents adrenaline spikes at the clinic from hiding pain or postural changes during the exam.
- Improves triage accuracy: Helps the veterinarian identify the specific area of concern and determine the severity of the condition more effectively.
Clinical Context (Merck Veterinary Manual)
Abnormal spinal curves, such as kyphosis or scoliosis, can arise from congenital vertebral malformations including hemivertebrae, block vertebrae, and butterfly vertebrae. Syringohydromyelia, the development of fluid-filled cavities within the spinal cord or an enlarged central canal, can also lead to scoliosis and spinal pain, alongside progressive ataxia and paresis. Diagnosis of spinal abnormalities relies on clinical signs and advanced imaging techniques like myelography or MRI. In cases of spinal trauma resulting in vertebral fractures or luxations, radiographs may only reveal a portion of the injuries; therefore, advanced imaging is indicated even with normal radiographs if spinal trauma is suspected.
Chapter: Neurology, Surgery, Orthopedics
Source: The Merck Veterinary Manual, 11th Edition (Page 1229)