TL;DR: Shifting lameness in puppies is often caused by Panosteitis, a painful but usually non-emergency condition that requires a veterinary exam within 24 to 48 hours unless severe symptoms like inability to stand occur.
What is shifting lameness in puppies and what causes it?
Shifting lameness occurs when a puppy appears to limp on one leg, only for the lameness to resolve and then reappear in a different leg days or weeks later. In growing puppies, this is most commonly associated with a condition called Panosteitis, often referred to as 'growing pains.' This involves inflammation on the surface of the long bones and typically affects large-breed dogs between 5 and 18 months of age.
Is shifting lameness in my puppy a veterinary emergency?
- The urgency level for shifting lameness is Medium; while Panosteitis is generally not a life-threatening emergency, it is very painful and requires veterinary intervention for pain management.
- You should schedule an appointment with your veterinarian within 24 to 48 hours.
- Seek immediate veterinary care if your puppy is completely unable to stand, is lethargic, or has a high fever.
How can a video of my puppy's limp help the veterinarian?
- Capturing a video of your puppy walking on a flat surface can be incredibly helpful for your veterinary team during triage.
- Because lameness can be intermittent, your puppy might not show the limp at the clinic due to the masking effects of adrenaline.
- A video allows the vet to see the exact gait abnormality, identify which legs are affected, and determine the severity of the discomfort before the physical exam begins.
Clinical Context (Merck Veterinary Manual)
Puppy shifting lameness, characterized by insidious onset between 4 and 8 months of age, can be caused by an ununited anconeal process (UAP). This condition results from separation of the ossification center of the anconeal process from the proximal ulnar metaphysis, typically due to biomechanical imbalances in the growing elbow. While a hereditary basis is suspected, it has not been definitively proven. Clinical signs include lameness, potential lateral deviation of the elbows, restricted range of motion, and, in advanced cases, osteoarthritis, joint effusion, and crepitus. Diagnosis is confirmed by radiography.
Chapter: Musculoskeletal, Metabolic/Nutritional, Infectious Diseases
Source: The Merck Veterinary Manual, 11th Edition (Page 1158)