Hip dysplasia is one of the health conditions that cats owners should know about, because it affects quality of life, and it is easier to manage when it is caught early. This guide explains what hip dysplasia is, the signs to watch for, what causes it, how it is diagnosed, how it is treated, whether it can be prevented, and how to live with a cat that has it. Every suggestion here is general guidance, not a prescription for an individual cat.
This guide covers hip dysplasia in cats in full: what it is, the signs to watch for, what causes it, how it is diagnosed, how it is treated, whether it can be prevented, and how to live with a cat that has it. Every suggestion here is general guidance, not a prescription for an individual cat, and a cat with hip dysplasia should be checked by a vet, because the right treatment depends on the individual cat, its age, and how advanced the condition is.
What is hip dysplasia in cats?
Hip dysplasia is a condition where the hip joint does not fit together properly: the ball of the thigh bone does not sit snugly in the socket of the pelvis, so the joint is loose, wears unevenly, and becomes painful over time. It is a developmental condition, which means the joint grows wrong from an early age, and it is most common in large and giant breeds, though it can affect cats of any size. A cat with hip dysplasia may seem fine as a kitten, and the problems often show up later, as the joint wears and arthritis sets in.
The rest of this guide covers the signs, the causes, how hip dysplasia is diagnosed, how it is treated, whether it can be prevented, and how to live with a cat that has it. A cat with hip dysplasia should be checked by a vet, because the right treatment depends on the individual cat, its age, and how advanced the condition is — and because some of the signs of hip dysplasia can also be signs of other conditions, which need a vet to tell apart. The cat ideal weight calculator works out a target weight range, and the when is a cat considered a senior guide gives the senior thresholds by size.
Signs of hip dysplasia in cats
The signs of hip dysplasia in cats are listed below. Not every cat with hip dysplasia will show every sign, and some cats will show only one or two — but any one of these signs, especially if it lasts more than a few days or gets worse, is worth mentioning to a vet. A cat that is bright, eating, drinking, and otherwise well between episodes is less likely to be seriously ill than a cat that is lethargic, off its food, or losing weight — but the only way to know is to check.
- Stiffness when getting up, especially after rest or in cold weather.
- A hopping or bunny-hopping gait with the back legs, especially when running.
- Reluctance to jump, climb stairs, or get into the car.
- Limping in one or both back legs, worse after exercise.
- Muscle loss in the back legs, because the cat uses them less.
- Pain when the hips are touched or moved, and a cat that cries out or flinches.
- A swaying walk, or a cat that sits with its legs out to the side rather than tucked under.
If two or more of those signs apply, or if one sign is severe — a cat that cannot urinate, cannot breathe, cannot stand, or has had a seizure lasting more than five minutes — see a vet the same day. Those are signs that need a vet, not waiting. Bring a note of when the signs started, how often they happen, and what the cat eats and drinks — that information helps the vet far more than a guess about the cause. The how to tell if your cat is overweight guide gives the hands-on check for weight, which matters for many of these conditions.
Causes and risk factors for hip dysplasia
Hip dysplasia is mostly inherited: a cat whose parents had hip dysplasia is more likely to develop it, which is why responsible breeders screen their dogs' hips before breeding. But genes are not the whole story — rapid growth and excess weight make it worse, because a kitten that grows too fast, or that carries too much weight, puts more load on a joint that is already loose. That is why large and giant breeds, which grow fast and carry a lot of weight, are affected most, and why steady growth and a healthy weight matter so much in a large-breed kitten.
Some cats are more prone to hip dysplasia than others, because of their genes, their breed, their size, or their age — but breed and age are not destiny, and a cat of any breed can develop hip dysplasia. What an owner can control is weight, food, exercise, and vet checks: a cat at a healthy weight, with measured food and daily exercise, is less likely to develop hip dysplasia and will cope better with it if it does. A cat that is overweight, that eats a poor diet, or that never sees a vet is more likely to develop hip dysplasia and to have it found late, when it is harder to treat.
How hip dysplasia is diagnosed
A vet diagnoses hip dysplasia with a physical examination and an X-ray. The vet will feel the hips for looseness, pain, and range of movement, and will watch the cat walk and move. An X-ray shows how well the ball sits in the socket, how much wear there is, and whether arthritis has set in. The X-ray is usually done under sedation, so the cat is still and the joint is positioned properly. A cat that is stiff, limping, or reluctant to jump should be checked, even if it is young — hip dysplasia can be diagnosed in a kitten as well as in an adult.
If you are worried about your cat, see a vet and mention hip dysplasia by name, with the signs you have seen and when they started. Bring a note of what the cat eats, how much, and any medicines it takes, and whether it has had hip dysplasia or a related condition before. A video of the signs, if it is safe to take one, helps the vet far more than a description — especially for seizures, limping, or breathing problems. Do not try to diagnose hip dysplasia yourself, and do not buy medicines or special diets for it without veterinary advice, because the wrong treatment can make it worse.
Treatment and management of hip dysplasia
Treatment depends on how bad the dysplasia is and how much pain the cat is in. For mild cases, the main treatment is weight control, controlled exercise, and pain relief prescribed by the vet: a cat at a healthy weight puts less load on its hips, and gentle, regular exercise keeps the muscles that support the joint strong. Physiotherapy and hydrotherapy can help, because they build muscle without loading the joint. For severe cases, the vet may discuss surgery — in some cats a total hip replacement, in others an operation to remove the ball of the joint so it heals as a false joint. Surgery is a big decision, and it is made with the vet, not on the basis of a web page.
Treatment is a decision made with the vet, weighing the cat's age, health, and quality of life against the treatment and its side effects. Some owners choose not to treat, and to keep the cat comfortable instead — and that is a valid choice, made with the vet, not on the basis of a web page. Whatever is decided, the treatment must be followed every day, at the same times, and the cat must be checked regularly, because hip dysplasia changes over time, and the treatment needs to change with it. Do not stop a medicine suddenly, and do not change the dose without veterinary advice.
Living with a cat with hip dysplasia
A cat with hip dysplasia can live a full and happy life with the right care. Keep its weight in the healthy range, keep exercise regular but gentle — short, frequent walks on flat ground rather than one long hike, and swimming where the cat is safe and comfortable — and give it a warm, supportive bed, ramps or steps instead of jumping, and a predictable routine. Watch for bad days: a cat with hip dysplasia will be stiffer in cold or damp weather, and it may need more rest and a little more pain relief on those days, as the vet advises. Mention any change to your vet promptly, because a cat that suddenly gets worse may have a new problem, not just a bad day.
Keep a routine: the same times for food, medicines, walks, and play, the same places for furniture, food, and water, and a calm, predictable home. Keep a note of appetite, drinking, weight, and behaviour, and mention any change to the vet promptly — a change that lasts more than a few days, or that gets worse, is worth a vet visit. Keep the cat at a healthy weight, with measured food and daily exercise at a level that suits its body, and keep vet checks regular: once a year as an adult, and twice a year as a senior. The senior cat diet guide covers feeding older cats, and the cat calorie calculator works out daily calories for any weight.
Can hip dysplasia be prevented?
Hip dysplasia cannot always be prevented, because much of it is inherited — but its severity can be reduced. If you are buying a kitten, ask what hip screening the parents had, and choose a breeder who screens. Feed a large-breed kitten a large-breed puppy food, designed for steady rather than rapid growth, and do not overfeed it: rapid growth and excess weight strain developing joints. Keep the cat at a healthy weight for life, with measured food and daily exercise, and avoid high-impact exercise such as jumping and stairs in a growing kitten.
Early checks matter most: have the cat checked regularly, so hip dysplasia is found early, when treatment works best. Keep the cat at a healthy weight, with measured food and daily exercise, and mention any change in drinking, eating, weight, or behaviour to your vet early, because a change caught early is easier to treat than one left for weeks.
For related reading, see the cat ideal weight calculator, the cat body condition score chart, the how to tell if your cat is overweight guide, the senior cat diet guide, the cat calorie calculator, the when is a cat considered a senior guide.
Frequently asked questions
What is hip dysplasia in cats?
Hip dysplasia is a condition where the hip joint does not fit together properly: the ball of the thigh bone does not sit snugly in the socket of the pelvis, so the joint is loose, wears unevenly, and becomes painful over time. It is a developmental condition, which means the joint grows wrong from an early age, and it is most common in large and giant breeds, though it can affect cats of any size. A cat with hip dysplasia may seem fine as a kitten, and the problems often show up later, as the joint wears and arthritis sets in.
What are the signs of hip dysplasia in cats?
The most common signs are: Stiffness when getting up, especially after rest or in cold weather. A hopping or bunny-hopping gait with the back legs, especially when running. Reluctance to jump, climb stairs, or get into the car. See the full list above for every sign to watch for, and see a vet promptly if two or more apply, or if one sign is severe.
What causes hip dysplasia in cats?
Hip dysplasia is mostly inherited: a cat whose parents had hip dysplasia is more likely to develop it, which is why responsible breeders screen their dogs' hips before breeding. But genes are not the whole story — rapid growth and excess weight make it worse, because a kitten that grows too fast, or that carries too much weight, puts more load on a joint that is already loose. That is why large and giant breeds, which grow fast and carry a lot of weight, are affected most, and why steady growth and a healthy weight matter so much in a large-breed kitten.
How is hip dysplasia diagnosed?
A vet diagnoses hip dysplasia with a physical examination and an X-ray. The vet will feel the hips for looseness, pain, and range of movement, and will watch the cat walk and move. An X-ray shows how well the ball sits in the socket, how much wear there is, and whether arthritis has set in. The X-ray is usually done under sedation, so the cat is still and the joint is positioned properly. A cat that is stiff, limping, or reluctant to jump should be checked, even if it is young — hip dysplasia can be diagnosed in a kitten as well as in an adult.
How is hip dysplasia treated?
Treatment depends on how bad the dysplasia is and how much pain the cat is in. For mild cases, the main treatment is weight control, controlled exercise, and pain relief prescribed by the vet: a cat at a healthy weight puts less load on its hips, and gentle, regular exercise keeps the muscles that support the joint strong. Physiotherapy and hydrotherapy can help, because they build muscle without loading the joint. For severe cases, the vet may discuss surgery — in some cats a total hip replacement, in others an operation to remove the ball of the joint so it heals as a false joint. Surgery is a big decision, and it is made with the vet, not on the basis of a web page.
When should a cat with hip dysplasia see a vet?
See a vet promptly if the cat shows any of the signs above, especially if they last more than a few days or get worse — and the same day if the cat cannot urinate, cannot breathe, cannot stand, has had a seizure lasting more than five minutes, or is lethargic or off its food. Bring a note of when the signs started and what the cat eats and drinks. A cat with hip dysplasia should be checked by a vet, because the right treatment depends on the individual cat, its age, and how advanced the condition is.
Results on this page are estimates for general information only and are not veterinary advice. If your pet is ill, underweight, overweight, pregnant, or has a health condition, consult your veterinarian before changing diet or care.