# Hip Dysplasia in Cats: Symptoms, X-rays, and Treatment Options Hip dysplasia in cats treatment depends on how much pain your cat has and how damaged the joint is. Mild cases often do well with weight control, joint supplements, and pain medication, while severe cases may need surgery. This article is educational and is not a substitute for veterinary diagnosis or treatment. ## Quick Answer - Hip dysplasia is an inherited malformation of the hip joint, and it is more common in cats than many owners realize, especially in large breeds like the Maine Coon [1][2]. - Signs include stiffness after rest, reluctance to jump, bunny-hopping gait, and decreased grooming or activity. - Diagnosis is confirmed with X-rays, and sometimes CT scans, which show the shape of the ball and socket and any arthritis. - Treatment starts with weight management, pain control, and joint support, and may include surgery for severe cases. - Home management can be effective for many cats, but it requires ongoing veterinary checkups and dose adjustments. ## What Is Hip Dysplasia in Cats? Hip dysplasia is a malformation of the ball-and-socket joint that connects the thigh bone to the hip [1]. The "ball" is the top of the femur, and the "socket" is a cup-shaped cavity in the pelvis called the acetabulum [1]. In a normal cat, the ball fits snugly but moves smoothly, letting your cat run, climb, and lie down comfortably [1]. In a cat with hip dysplasia, the joint does not fit together properly. The soft tissues that normally stabilize the joint become lax, so the ball slips around more than it should. Over time, this looseness causes wear and tear, leading to osteoarthritis. The condition is inherited, meaning it runs in families and breeds [1][3]. Hip dysplasia is less common in cats than in dogs, but it is far from rare [1]. One study of pedigree cats found hip dysplasia in 46.7% of the cats examined, and 78% of those had it in both hips [4]. Another study of Maine Coons found a prevalence of 24.9% [2]. A separate 20-year study of Maine Coons reported a prevalence of 37.4% [3]. The wide range reflects differences in how cats were screened and which breeds were included. ## Hip Dysplasia in Cats Symptoms Cats are masters at hiding pain. A cat with hip dysplasia may not limp the way a dog would. Instead, you might notice subtle changes over months. Common signs include: - Stiffness after sleeping or resting, which improves as your cat warms up - Reluctance to jump onto counters, cat trees, or windowsills - Jumping down in stages instead of one smooth leap - A bunny-hopping gait when running, where both back legs move together - Decreased grooming, especially around the back end and tail base - Irritability when touched near the hips or back legs - Muscle loss in the hindquarters - Spending more time lying down and less time playing Some cats show no obvious signs at all, especially early on. The severity of dysplasia does not always match the severity of symptoms. A cat with mild X-ray changes can be very uncomfortable, while a cat with more advanced changes may seem fine. That is one reason regular veterinary exams matter, particularly for breeds at higher risk. If your cat is slowing down, it is worth asking whether the problem is the hip joint or something else. Feline osteoarthritis can affect many joints, and it often looks similar to hip dysplasia at home. You can read more about that in [Feline Osteoarthritis: Diagnosis and Management](/knowledge/veterinary-medicine/clinical-methods/feline-osteoarthritis-diagnosis-management). ## Causes and Risk Factors The main cause of hip dysplasia is genetics. The condition is inherited, and certain breeds are at much higher risk [1][3]. Maine Coons are the most studied breed, and they carry a heavy burden of the disease [2][3]. Other large breeds, including Siberian cats, also show higher rates [4]. Body size matters too. A study of Maine Coons found that the severity of hip dysplasia was genetically correlated with body mass, meaning selection for a large body type also selects for the condition [3]. Heavier cats tend to have more severe symptoms, and severity increases with age [3]. Age is another factor. The youngest cat with hip dysplasia in one large registry was only 4 months old, and most X-rays were taken between 4 and 60 months of age [2]. This tells us the condition can start early, even if signs appear later. Sex may play a small role. One study found hip dysplasia slightly more common in male Maine Coons than females [2], but another study found no sex predilection [3]. The difference is minor, so sex should not change how you monitor your cat. Finally, some cats develop hip problems from other causes, such as a slipped capital femoral epiphysis, which is a separation of the growth plate in the hip. This is a separate condition but can lead to similar arthritis and may require similar treatment [5]. ## How Hip Dysplasia in Cats Is Diagnosed Diagnosis starts with a physical exam. Your veterinarian will watch your cat walk, feel the hip joints for looseness or grinding, and check muscle mass in the hind legs. They will also ask about your cat's history, including jumping ability, grooming habits, and any changes in activity. ### Hip Dysplasia in Cats X-ray X-rays are the standard way to confirm hip dysplasia [1][2]. A radiograph shows the shape of the femoral head and the acetabulum, how well they fit together, and whether arthritis has developed. Your veterinarian may take several views, including one with the hips extended, to see the joint clearly. On an X-ray, your veterinarian looks for: - A shallow socket that does not cover the ball well - A femoral head that sits partly outside the socket - Flattening or thickening of the femoral head - Signs of osteoarthritis, such as new bone around the joint - A widened joint space from laxity X-rays are usually taken under light sedation so your cat relaxes and the hips are positioned properly. The images are graded, often from mild to severe. In one study, most affected cats had mild to moderate changes, but 6.1% of hip joints showed severe dysplasia [4]. ### Other Imaging Sometimes your veterinarian will recommend a CT scan. CT gives a three-dimensional view of the joint and can measure angles and laxity more precisely than plain X-rays [6]. This is more common when surgery is being considered or when the diagnosis is unclear. ### Ruling Out Other Conditions Hip dysplasia can look like other problems. Your veterinarian may check for patellar luxation, a kneecap that slips out of place, which was found in 32.7% of pedigree cats in one study [4]. They may also check for spinal issues or nerve problems. Blood work and urine tests are often done before starting pain medication, especially in older cats. If your cat is also losing weight, drinking more, or showing other systemic signs, your veterinarian may test for conditions like hyperthyroidism. You can learn more in [Feline Hyperthyroidism: Signs, Diagnosis, and Treatment](/knowledge/veterinary-medicine/clinical-methods/feline-hyperthyroidism-signs-diagnosis-and-treatment). ## Hip Dysplasia in Cats Treatment Options There is no cure that reverses the malformation. The goal of treatment is to relieve pain, improve mobility, and slow the progression of arthritis. Options fall into two broad groups: nonsurgical management and surgery. ### Hip Dysplasia in Cats Treatment at Home Home management is the first line for most cats, especially those with mild to moderate signs. It works best when combined with regular veterinary care. **Weight management.** Keeping your cat at a healthy weight is one of the most effective things you can do. Extra pounds put more stress on the hips, and studies show that heavier cats have more severe dysplasia [3]. Your veterinarian can help you choose a measured feeding plan. **Pain medication.** Nonsteroidal anti-inflammatory drugs (NSAIDs) are commonly used for joint pain in cats. Cats metabolize these drugs differently than dogs, so never give human pain relievers or dog medications. Your veterinarian will calculate the dose from your cat's weight and health and will monitor blood work periodically. **Joint supplements.** Glucosamine, chondroitin, and omega-3 fatty acids are often used to support joint health. Evidence for these in cats is limited, but many owners report improvement. Ask your veterinarian before starting any supplement. **Physical therapy and hydrotherapy.** Gentle exercise and hydrotherapy can help maintain muscle strength and joint mobility [7]. A veterinary rehabilitation therapist can design a safe program for your cat. **Environmental changes.** Provide ramps or steps to favorite spots, use low-sided litter boxes, and place food and water within easy reach. Soft bedding with warmth can ease morning stiffness. **Regenerative medicine.** Stem cell therapy and other regenerative treatments are being studied for osteoarthritis in veterinary medicine [7]. These are not yet standard for cats, and availability varies. Discuss with your veterinarian whether a referral is appropriate. ### Hip Dysplasia in Cats Surgery Surgery is considered when pain cannot be controlled with medication or when the joint damage is severe. Several procedures exist. **Juvenile pubic symphysiodesis (JPS).** This is a preventive procedure done in young cats, usually around 4 to 5 months of age, while the skeleton is still growing. It changes the growth of the pelvis to improve how the socket covers the ball. A case report of an 18-week-old Maine Coon found that JPS improved hip joint conformation and laxity, with no complications [6]. This is a promising option for kittens diagnosed early [6]. **Total hip replacement (THR).** This replaces the damaged joint with an artificial one. It is uncommon in cats because of their anatomy, but it is being done more often. A recent study of 17 cementless mini hip replacements in 11 cats reported that indications included slipped capital femoral epiphysis, hip dysplasia, and a femoral neck fracture [5]. Complications occurred in some cats, including femoral fractures and one hip luxation [5]. THR is a major surgery and is usually performed by a board-certified surgeon. **Femoral head and neck ostectomy (FHO).** This removes the ball of the hip joint so scar tissue can form a false joint. It is a salvage procedure for cats that cannot have a hip replacement. It relieves pain but changes how the leg works. Many cats do well with FHO, especially smaller cats. ### Comparing Treatment Options | Option | Best for | What it involves | Main trade-offs | |---|---|---|---| | Weight control and home care | Mild to moderate signs | Diet, pain meds, supplements, ramps | Requires daily commitment and monitoring | | Physical therapy | Any stage, as support | Hydrotherapy, gentle exercise | Needs a trained therapist, travel to sessions | | Juvenile pubic symphysiodesis | Young kittens with early diagnosis | One surgery at about 4 to 5 months | Must be done before growth plates close [6] | | Total hip replacement | Severe pain, good candidate | Major surgery, implant | Higher cost, risk of complications [5] | | Femoral head and neck ostectomy | Salvage when THR is not possible | Removes the femoral head | Alters gait, needs rehab | Costs vary widely by region, clinic, and procedure. Your veterinarian can give you an estimate after examining your cat and reviewing the X-rays. ## Recovery, Outlook, and Long-Term Management Cats with hip dysplasia can live full lives with good management. The condition is progressive, meaning arthritis tends to worsen over time, but the rate varies. Some cats stay comfortable for years with home care. Others need surgery to stay mobile. After surgery, recovery takes weeks to months. Your cat will need restricted activity, pain medication, and gradual return to movement. Follow your surgeon's instructions closely. Physical therapy often helps. For cats managed at home, plan on regular checkups, usually every 6 to 12 months, or more often if signs change. Your veterinarian will adjust medications and monitor for side effects. Weight control remains important for life. Watch for other age-related conditions as your cat gets older. Dental disease, thyroid problems, and kidney disease can all affect quality of life. You can read about dental care in [How To Treat Dental Disease In Cats](/knowledge/veterinary-medicine/dental-care/how-to-treat-dental-disease-in-cats). If your cat starts having accidents or straining to urinate, that could be a separate problem. See [Urinary Tract Infection Symptoms Cats Treatment](/knowledge/veterinary-medicine/symptom-guides/urinary-tract-infection-symptoms-cats-treatment). ## Prevention Hip dysplasia is inherited, so the best prevention is selective breeding. A study of Maine Coons found that selective breeding against hip dysplasia successfully reduced the severity of symptoms in descendants, and those cats were also smaller than their ancestors [3]. If you are getting a kitten from a breeder, ask whether the parents were screened for hip dysplasia. Screening pedigree cats before breeding is recommended [4]. For your cat, keeping a healthy weight is the most practical prevention step. Obesity worsens symptoms and may accelerate arthritis [3]. Feed measured meals, limit treats, and encourage activity with toys and climbing structures that are easy on the hips. There is no vaccine or diet that prevents hip dysplasia. Early diagnosis gives you more options, including JPS for kittens [6]. If you have a large breed cat, talk to your veterinarian about screening X-rays, especially if you notice any stiffness or reluctance to jump. ## Limitations and When to Contact a Veterinarian This article gives general information. Your cat's individual case needs a veterinarian who can examine your cat, review X-rays, and tailor treatment. Contact your veterinarian the same day if your cat: - Suddenly cannot bear weight on a back leg - Cries out when touched near the hips - Stops eating or drinking - Has a swollen or hot joint Go to an emergency clinic immediately if your cat: - Drags a back leg or cannot stand - Has a suspected fracture or dislocation after a fall - Is panting heavily, collapsed, or unresponsive Call for a routine visit if you notice: - Gradual reluctance to jump or climb - Stiffness that lasts more than a few days - Weight gain or loss of muscle in the back legs - Changes in grooming or litter box habits Do not give human pain medications to your cat. Many are toxic to cats, and the correct dose must be calculated by a veterinarian based on your cat's weight and health. ## Frequently Asked Questions ### Can hip dysplasia in cats be cured? No, the malformation itself cannot be reversed. Treatment focuses on managing pain and slowing arthritis. Some cats do very well with home care, and surgery can replace or remove the damaged joint in severe cases. ### Is hip dysplasia painful for cats? It can be very painful, but cats often hide pain well. You may see stiffness, reluctance to jump, or changes in grooming instead of obvious limping. If you suspect pain, have your cat examined. ### Do all cats with hip dysplasia need surgery? No. Many cats are managed with weight control, pain medication, and joint support. Surgery is usually reserved for cats with severe pain or those who do not respond to medical management. ### Can I prevent hip dysplasia in my cat? You cannot change your cat's genetics, but you can keep your cat at a healthy weight. If you are choosing a kitten, ask about screening of the parents. Early diagnosis in kittens opens the door to preventive procedures. ### How much does hip dysplasia treatment cost? Costs vary by region, clinic, and treatment. Home management involves ongoing medication and checkup costs. Surgery is more expensive and includes imaging, anesthesia, the procedure, and follow-up care. Your veterinarian can provide an estimate after examining your cat. ## Related Articles - [Cat Hypothyroidism: Symptoms, Diagnosis, and Treatment Options](/knowledge/veterinary-medicine/senior-and-chronic-care/cat-hypothyroidism-symptoms-treatment) - [Feline Osteoarthritis: Diagnosis and Management](/knowledge/veterinary-medicine/clinical-methods/feline-osteoarthritis-diagnosis-management) - [Feline Hyperthyroidism: Signs, Diagnosis, and Treatment](/knowledge/veterinary-medicine/clinical-methods/feline-hyperthyroidism-signs-diagnosis-and-treatment) - [How To Treat Dental Disease In Cats](/knowledge/veterinary-medicine/dental-care/how-to-treat-dental-disease-in-cats) - [Urinary Tract Infection Symptoms Cats Treatment](/knowledge/veterinary-medicine/symptom-guides/urinary-tract-infection-symptoms-cats-treatment) - [Demodex in Cats: Feline Demodicosis Diagnosis and Treatment](/knowledge/veterinary-medicine/parasite-control/demodex-in-cats-feline-demodicosis-diagnosis-and-treatment) ## References 1. [Hip Dysplasia](https://www.vet.cornell.edu/departments-centers-and-institutes/cornell-feline-health-center/health-information/feline-health-topics/hip-dysplasia). Cornell University College of Veterinary Medicine. 2. [Demographics of hip dysplasia in the Maine Coon cat](https://pubmed.ncbi.nlm.nih.gov/28430011/). Journal of feline medicine and surgery, 2018. 3. [Demography, heritability and genetic correlation of feline hip dysplasia and response to selection in a health screening programme](https://pubmed.ncbi.nlm.nih.gov/31748658/). Scientific reports, 2019. 4. [The Prevalence of Feline Hip Dysplasia, Patellar Luxation and Lumbosacral Transitional Vertebrae in Pedigree Cats in The Czech Republic](https://pubmed.ncbi.nlm.nih.gov/34573448/). Animals : an open access journal from MDPI, 2021. 5. [Zurich Mini Cementless Total Hip Replacement in Cats: Specific Considerations and Short-Term Outcomes in 11 Cats (17 Hips)](https://pubmed.ncbi.nlm.nih.gov/42767266/). Veterinary and comparative orthopaedics and traumatology : V.C.O.T, 2026. 6. [Morphometric assessment of hip dysplasia in a cat treated by juvenile pubic symphysiodesis](https://pubmed.ncbi.nlm.nih.gov/27439879/). Veterinary and comparative orthopaedics and traumatology : V.C.O.T, 2016. 7. [Non-surgical pain management for hip joint disease in veterinary medicine](https://pubmed.ncbi.nlm.nih.gov/39296629/). Veterinarni medicina, 2024. ## Further Reading - [Merck Veterinary Manual: Cat Owners](https://www.merckvetmanual.com/cat-owners) - [Cornell Feline Health Center: Health Information](https://www.vet.cornell.edu/departments-centers-and-institutes/cornell-feline-health-center/health-information) - [American Veterinary Medical Association: Pet Care](https://www.avma.org/resources-tools/pet-owners/petcare)