TL;DR: If your dog is skipping or holding up a hind leg, it typically indicates intermittent lameness caused by an orthopedic issue and requires a veterinary exam within 24–48 hours. Capturing a video of the behavior is a crucial tool to help your vet diagnose the problem.
Why is my dog holding its leg up or skipping while running?
Seeing your dog skip or carry a hind leg while running can be distressing. This behavior is often a sign of intermittent lameness, where the dog shifts weight to avoid pain or because a joint is mechanically unstable. It is a common symptom for various orthopedic issues that affect how a dog distributes their weight during high-energy movement.
Is it an emergency if my dog is carrying its hind leg?
- The urgency level for a dog holding a hind leg up is generally classified as Medium.
- While it is usually not a life-threatening situation, it indicates that your pet is experiencing discomfort or a structural injury.
- You should aim to have your dog evaluated by a veterinarian within 24 to 48 hours.
- Seek immediate urgent care if the leg is dangling, hot to the touch, or if your dog is unable to stand at all.
How can I help my veterinarian diagnose my dog's limp?
- Record a clear video or take a photo of your dog running and lifting the leg to show your vet.
- Visual documentation is vital because a dog’s adrenaline may mask the limp during a physical exam at the clinic.
- Seeing the specific angle of the leg and the frequency of the "skip" helps the vet differentiate between a luxating patella, a ligament tear, or a hip issue.
Clinical Context (Merck Veterinary Manual)
Hindlimb lameness can manifest as a nonweight-bearing (swinging leg) lameness, where the dog reduces the amount of time or force applied to the affected limb. Clinical signs include a dropped head during weight-bearing on the affected limb and a shortened stride on the affected side. Evaluation involves palpating the limb from distal to proximal, noting abnormalities such as swelling, pain, instability, crepitation, reduced range of motion, and muscle atrophy. Diagnostic imaging, such as radiography, ultrasonography, CT, or MRI, may be necessary. The cause of the lameness must be determined to guide appropriate treatment, as mechanical lameness may not respond to analgesics, whereas lameness caused by pain may respond to systemic or local analgesics and anti-inflammatory drugs.
Chapter: Neurology, Orthopedics
Source: The Merck Veterinary Manual, 11th Edition (Page 1096)