Updated September 25, 2026. Fact-checked against veterinary sources; review by a licensed veterinarian is in progress. See our editorial policy.
Quick answer: A broken bone (fracture) in a dog usually follows trauma, such as a car accident, fall, or being stepped on. Signs include sudden lameness, not putting weight on a leg, swelling, and pain. Get your dog to a vet promptly, moving it as gently as possible. Many fractures need surgical repair with plates, pins, or external frames. Recovery usually takes 6–12 weeks of strictly limited activity.
Signs of a fracture
- Sudden limping or holding up a leg
- Swelling, bruising, or an abnormal angle of a limb
- Pain, crying out, or aggression when touched
- A wound with bone showing (open fracture)
- Reluctance to move, or dragging a limb
First aid on the way to the vet
- Protect yourself: hurt dogs may bite. Use a muzzle only if your dog is breathing comfortably and not vomiting.
- Keep your dog still: carry small dogs in your arms or a carrier, and move large dogs on a board, blanket, or sturdy mat as a stretcher.
- Cover open wounds with a clean, damp cloth. Don’t push bone back in.
- Don’t try to straighten or splint the leg unless you’ve been trained. A poorly applied splint can cause more harm.
- Call ahead to the clinic.
After major trauma, dogs may also have chest or internal injuries, so an exam goes beyond the obvious fracture.
Diagnosis
- Pain relief and stabilization first
- X-rays of the injured area, and often the chest
- Bloodwork before anesthesia
- CT scans for complex fractures
Treatment options
- Surgery with plates and screws, pins, wires, or an external fixator frame
- Casts or splints for some stable fractures below the elbow or knee, usually in young dogs
- Cage rest for some pelvic fractures
- Amputation in rare cases where the limb can’t be saved
Toy breeds often break the forearm bones, and these fractures tend to heal poorly in a cast, so surgery is usually recommended.
Fractures without major trauma
A bone that breaks with little force, especially in an older large-breed dog, may be weakened by bone cancer (a “pathologic fracture”). Your vet may recommend further tests.
Recovery at home
- Strict confinement: a crate or small room, with short leash walks for bathroom breaks only.
- No running, jumping, stairs, or play until your vet confirms healing on X-rays.
- Use a sling for support on slippery floors or steps.
- Bandage and cast care: keep it clean and dry. Call your vet for swelling above or below it, a bad smell, wetness, slipping, or chewing.
- Cone to prevent licking of incisions.
- Pain medication exactly as prescribed.
- Rehabilitation exercises as your vet or rehab therapist recommends.
- Keep all rechecks and follow-up X-rays.
Possible complications
- Infection
- Implant loosening or breaking
- Slow healing or non-healing
- Stiffness or muscle loss
Call your vet if your dog stops using the leg after it was improving, or the area becomes swollen or painful.
What to avoid
- Human pain relievers, which can be dangerous for dogs.
- Letting your dog off-leash too soon.
- Waiting to see if a limp improves after significant trauma.
Frequently asked questions
How long does a dog’s broken bone take to heal?
Young dogs may heal in 4–8 weeks. Adult dogs often take 8–12 weeks or longer.
Can a dog’s broken leg heal without surgery?
Some fractures can, with a cast or rest, but many need surgery for proper healing. Your vet will advise based on the X-rays.
Will the plate need to come out?
Usually not, unless it causes problems.
Sources
- Merck Veterinary Manual: Fractures in small animals
- Johnson AL, Houlton JEF, Vannini R. AO Principles of Fracture Management in the Dog and Cat. Thieme
- Brinker, Piermattei and Flo’s Handbook of Small Animal Orthopedics and Fracture Repair. Elsevier
- American College of Veterinary Surgeons (ACVS): Fractures
This article is for general education and is not a substitute for care from your own veterinarian. Learn about The Pet Vet and our editorial policy.