Hip Dysplasia in Dogs: Signs, Causes and What Helps

What hip dysplasia is and what it usually means

VCA Animal Hospitals describes hip dysplasia as a growth deformity: the ball (femoral head) and the socket (pelvis) do not grow at matching rates, so the joint becomes loose. The body tries to stabilize it, and over time that leads to osteoarthritis. The AKC adds that the joint grinds instead of moving smoothly, causing pain, inflammation and loss of function.

Signs do not always match what shows on an X-ray. VCA notes that some dogs with marked changes show little discomfort, while others with mild changes are very painful. That is one reason a limp or stiffness should be examined rather than guessed at.

Which dogs are most at risk

Any dog can be affected, but VCA says it is most common in large breeds, including German Shepherds, Saint Bernards, Labrador and Golden Retrievers, Old English Sheepdogs and bulldogs. The AKC names Great Danes, Saint Bernards, Labrador Retrievers and German Shepherd Dogs as especially prone. Large mixed breeds are also at risk.

Genetics are the main driver, but they are not the whole story. Both sources point to rapid growth, overfeeding, poor nutrition, inappropriate exercise and excess body weight as factors that can bring on or worsen the problem in dogs that are already predisposed.

Signs to watch for

Signs can start in puppies as young as 4 months, though VCA says they are most common at 1 to 2 years, and many dogs show no obvious problem until arthritis develops later. Common signs include weakness or pain in the hind legs, a wobbly or swaying gait, a "bunny hopping" run, limping, and reluctance to rise from sitting or lying down.

You might also notice your dog avoiding stairs, hesitating before jumping into the car, running or playing less, or losing thigh muscle while the shoulders look more developed from compensating. A grating feeling in the joint is another sign the AKC lists. None of these proves hip dysplasia, since other conditions cause similar signs, so they are a reason to book a vet visit.

When to call your vet

Book an appointment if your dog shows hind-limb weakness, limping, stiffness after rest, difficulty with stairs or any reluctance to move that is new. VCA advises that suspected hip dysplasia be X-rayed promptly. Early diagnosis gives you more options and helps protect the joint.

Call the same day if your dog suddenly cannot put weight on a back leg, cries out in pain, cannot get up, or seems unusually distressed. A sudden change is not typical of slowly progressing dysplasia and needs to be seen quickly. If your dog collapses, go to the nearest emergency vet.

How vets check for it

A vet will usually begin with a physical exam, moving the hind legs to check for looseness, grinding, pain and range of motion, and asking about your dog's history, activity and any family history of joint disease. The AKC notes that bloodwork can help rule out other conditions.

VCA says X-rays of the hips, taken under general anesthesia or heavy sedation so the dog is relaxed and positioned properly, are the preferred way to diagnose it. X-rays also show how severe the joint changes are, which guides treatment. Genetic testing is still being researched, and VCA describes its reliability as questionable.

Treatment options your vet may discuss

Treatment depends on age, severity and lifestyle. Non-surgical management, described by both VCA and the AKC, can include weight control, moderate and controlled exercise, physical therapy and rehabilitation, anti-inflammatory pain medication, and joint-support options. Which medicines or supplements suit a dog is a decision for the vet, and nothing should be given without that guidance.

Surgery is considered when medical care is not enough. The AKC lists options including pelvic osteotomy for young dogs, femoral head ostectomy, and total hip replacement, which it describes as generally the most effective for severe disease. Many dogs live long, active lives with early diagnosis, weight management and appropriate care.

Helping at home and preventing problems

Keeping a dog lean is the most practical thing owners can do. VCA reports that in one study, puppies at risk that were fed unlimited food developed the disease about twice as often as those fed measured meals, and it recommends measured meals and a large-breed growth diet in the first year. Moderate daily exercise on forgiving surfaces helps maintain muscle, while high-impact jumping is best avoided.

For a dog with sore hips, small changes around the house can make a difference. Non-slip floors, a supportive bed such as an orthopedic dog bed, and a way to reach the couch or car, such as dog ramps or dog stairs, reduce jumping. If you are buying a puppy of a large breed, the AKC suggests choosing a breeder who performs health screenings such as OFA testing.

This page is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your pet.