Senior Paws Guide is reader-supported. We may earn a commission if you buy through links on this page, at no extra cost to you. Learn more. This guide is for general information and is not veterinary advice.
Back-leg limps are common, and the hind legs have a few classic problem areas: the paw, the knee and the hip. This guide is general information and does not replace an exam. If your dog will not put any weight on a leg, is in obvious pain, or has a leg at an odd angle, call your vet or an emergency clinic now.
Most common causes of a back-leg limp
| Cause | Typical signs | More common in |
|---|---|---|
| Paw or nail injury | Licking the paw, sudden limp, visible cut or broken nail | Any dog |
| Cruciate ligament tear | Sudden limp after activity, toe-touching, sitting with the leg out to the side | Medium and large dogs, overweight dogs |
| Luxating patella | Skipping or hopping for a few steps, then normal | Small and toy breeds |
| Hip dysplasia | Bunny hopping, stiffness, trouble rising, narrow stance | Large breeds, from a young age |
| Arthritis | Stiffness after rest, slower walks, gradual onset | Older dogs |
| Spinal problems | Weakness, wobbliness, knuckling, back pain | Long-backed breeds, older dogs |
Cruciate ligament injury: the big one
The cranial cruciate ligament stabilizes the knee. When it tears, dogs often hold the leg up or barely touch it to the ground, especially after running or jumping. Partial tears can worsen over time, and the other knee is at higher risk. A vet exam, sometimes with X-rays, confirms it; treatment ranges from surgery to conservative management depending on the dog.
What you can do at home
- Check the paw and nails first.
- Restrict activity: leash walks only, no stairs, jumps or play.
- Use a ramp for the car or bed, and a rear lift harness if your dog struggles.
- Add rugs to slippery floors.
- See your vet if it does not improve within a day or two.
When it is an emergency
- Will not put any weight on the leg
- Leg hanging at an odd angle, or a suspected fracture
- Heavy bleeding or a deep wound
- Sudden weakness or dragging of both back legs
- Severe pain: crying, panting, trembling, snapping when touched
- Limping with fever, lethargy or loss of appetite
- Swelling that is hot or growing fast
Long-term back-leg weakness in older dogs
In seniors, gradual back-leg weakness is often arthritis, hip problems or spinal disease. Pain relief, weight control, physical therapy and home changes can make a big difference. See how to make a senior dog comfortable.
Last reviewed: November 2026. Prices and specifications change; check the retailer before you buy.