TL;DR: Sudden rear limb weakness or wobbling in cats is a high-priority medical emergency that requires immediate veterinary care. These symptoms can indicate serious conditions such as blood clots or spinal cord injuries.
What does it mean if my cat is experiencing rear limb weakness or wobbling?
Rear limb weakness, known medically as paresis, or wobbling, known as ataxia, occurs when a cat loses full control or strength in their back legs. This may appear as a 'drunken' gait, dragging of the paws, or a sudden inability to stand up. These symptoms usually indicate an underlying issue with the nervous system, the spinal cord, or the circulatory system.
Is my cat’s sudden leg weakness a veterinary emergency?
- Seek emergency veterinary care immediately if your cat is suddenly unable to use their back legs.
- Watch for signs of significant pain or distress.
- Check if your cat's back paws feel cold to the touch, which may indicate a lack of circulation.
- Understand that these symptoms can signal life-threatening conditions like Feline Aortic Thromboembolism (Saddle Thrombus) or severe spinal cord injury.
How can providing a photo or video help my vet triage my cat?
- Record a short video of your cat attempting to walk in their home environment.
- Capture the specific gait pattern to help the vet differentiate between neurological issues, muscular weakness, or orthopedic pain.
- Provide visual evidence for the vet, as cats often hide symptoms or become immobile due to stress when they arrive at the clinic.
Clinical Context (Merck Veterinary Manual)
Diseases of the spinal column and cord can cause back leg weakness and wobbling, including congenital disorders, degenerative diseases, inflammatory and infectious diseases, neoplasia, nutritional diseases, trauma, toxic disorders, and vascular diseases. Cervical spondylomyelopathy, also known as wobbler syndrome, involves spinal cord compression due to abnormal development of the cervical vertebrae and may be related to genetic or nutritional factors. Arterial thromboembolism can also manifest as hindlimb pain, firm gastrocnemius muscles, and the ability to move the legs above the stifles; diagnosis is based on clinical signs, physical examination, and Doppler blood flow readings, with ultrasound useful for identifying the thromboembolus, and neurological abnormalities are commonly misdiagnosed as this condition.
Chapter: Cardiology, Neurology, Degenerative Disease
Source: The Merck Veterinary Manual, 11th Edition (Page 1245)