Last updated First published 30 July 2026
Far more common than most owners expect. The Cornell Feline Health Center describes a study in which researchers analysed X-rays of the spines and limbs of 100 middle-aged and elderly cats, all aged 10 or older. Ninety percent of the cats over the age of 12 showed evidence of degenerative joint disease. Very few had perfectly normal joints. Joint disease can also occur in younger cats. Cornell cites an estimate of 20% of cats aged one and above being affected to some extent. These figures come from different research populations; they do not mean that every older cat has the same disease severity or pain. Behaviour and examination remain important alongside imaging.
Far more common than most owners expect. The Cornell Feline Health Center describes a study in which researchers analysed X-rays of the spines and limbs of 100 middle-aged and elderly cats, all aged 10 or older. Ninety percent of the cats over the age of 12 showed evidence of degenerative joint disease. Very few had perfectly normal joints.
By the numbers
- 90% Cats over 12 with radiographic joint changes in the older-cat study described by Cornell; not an individual pain estimate
How common is arthritis in older cats?
Far more common than most owners expect. The Cornell Feline Health Center describes a study in which researchers analysed X-rays of the spines and limbs of 100 middle-aged and elderly cats, all aged 10 or older. Ninety percent of the cats over the age of 12 showed evidence of degenerative joint disease. Very few had perfectly normal joints.
Joint disease can also occur in younger cats. Cornell cites an estimate of 20% of cats aged one and above being affected to some extent. These figures come from different research populations; they do not mean that every older cat has the same disease severity or pain. Behaviour and examination remain important alongside imaging.
Changes at home can be subtle even when joint disease is present. Notice what has become harder rather than waiting for a dramatic limp.
Why don't arthritic cats limp?
Limping can be subtle or absent, particularly when more than one limb is affected. A cat may instead jump less, change resting places or struggle with grooming. Lack of a visible limp does not establish that your cat is comfortable, and these changes can have other medical causes.
Dogs with arthritis get taken to the vet because they limp and whine. Cats with arthritis get described as slowing down, or getting lazy in their old age, or becoming less affectionate. The behaviour changes, and the change gets filed under ageing rather than pain, which is why so much feline arthritis goes untreated for years.
What does it actually look like in a flat?
Watch what your cat has stopped doing. That's the useful signal, and it's easy to miss because absence is quieter than symptom.
Height. Notice whether your cat has stopped using a familiar perch or takes a different route. Pain is one possible reason, but do not diagnose arthritis from one change. Mention the pattern and any other behaviour changes at the appointment.
How she gets up there. A cat who used to go straight up now goes in two stages, via a chair. Or she gathers herself at the bottom, shifts her weight, and hesitates before committing. That pause is worth noticing.
Landing. Coming down is harder than going up, because landing loads the elbows and shoulders. A cat who'll still jump up but reverses down backwards, or picks the lowest route down, is telling you something.
Grooming. Arthritis in the spine and hips makes twisting round to groom the lower back and tail base genuinely painful. A matted or greasy patch over the rump on a cat who was always immaculate is a classic sign, and it gets blamed on old age or laziness far more often than on pain. Conversely, some cats overgroom a specific sore joint until the fur thins there.
Litter tray habits. A high tray edge or painful posture can make toileting harder. Changes may also reflect urinary, digestive or other problems. Repeated straining with little or no urine needs urgent veterinary attention, especially in a male cat. Do not assume missed trays are simply arthritis or deliberate behaviour.
Temper. A cat who's begun objecting to being picked up, or who swipes when stroked along the back, may not have become unfriendly. Being handled hurts in a way it didn't a year ago.
What can you change in an HDB flat this week?
Practical home changes can support comfort alongside a veterinary pain plan. They are not a substitute for medicine when it is needed.
Break the big jumps into smaller steps. A stable stool or ramp can provide an easier route to a favourite spot. Make sure it cannot slip or tip, let your cat choose whether to use it and adapt it to the individual. No fixed number of days guarantees improvement.
Cut down the litter tray. A tray with one low side, or a shallow storage box, removes the climb. Keep it large enough that she can turn round, and put one on every level she spends time on so she isn't making a long trip.
Raise the bowls slightly. Eating and drinking with a sore neck and elbows is easier from a bowl a few centimetres off the floor.
Offer a comfortable resting choice. Provide a supportive bed away from direct draughts as well as a cooler option. Let your cat choose. Air-conditioning is not proven to worsen every cat’s arthritis, and removing cooling in Singapore can create a different problem. Avoid direct heating devices that could burn a less-mobile cat.
Soft, non-slip flooring on her routes. Polished tiles are everywhere in Singapore flats and they're miserable for a cat whose grip and confidence have gone. A runner or a few mats along the route between her bed, her food and her tray makes moving around less of a gamble.
What will a vet do?
Cornell describes the diagnostic process as a complete medical history and physical examination, followed by an orthopaedic exam and X-rays of the joints. Bring video. A short clip of your cat hesitating before a jump, or getting up after a long sleep, is worth more than any description you can give in a consulting room, particularly since most cats freeze in a clinic and look deceptively fine.
Be specific about what's changed rather than saying she's slowed down. Which surfaces has she given up? When did the grooming patch appear? Does she stretch differently? Those details are what a vet works from.
Pain relief for cats is a genuinely specialised business and this is the part where you must not improvise. A great many human painkillers, paracetamol above all, are lethal to cats, and several drugs that are routine for dogs are not safe here either. Never give a cat anything from your own cupboard or a dog's prescription. Our poisoning and toxins page covers the household drugs that cause the most harm, and if you need to get medication into a reluctant cat, our guide to giving cat medicine is a gentler route than wrestling.
What about weight and supplements?
Ask your vet to assess body condition and muscle as part of the plan. An overweight cat may need gradual, supervised weight loss, but an older cat losing weight or muscle needs investigation. Do not crash-diet or restrict food without advice. Weight management supports overall care; it does not replace pain relief.
Joint supplements are widely sold and widely asked about. The honest position is that the evidence in cats is thinner than the marketing suggests, and we'd rather say so than sell you a certainty we cannot support. If you want to try one, treat it as an addition to the environmental changes and the weight plan rather than a replacement, and tell your vet what you're giving so it can be accounted for. Our supplements guide goes through what's sold here.
What does the daily routine look like afterwards?
Arthritis is managed rather than cured, so the useful question is what a normal week looks like once you know.
Keep her moving gently. Complete rest stiffens joints further. Short, low-intensity play, a wand toy at floor level rather than one that asks her to leap, keeps muscle on her and muscle supports the joint. Several very short sessions beat one long one.
Watch the mornings. Stiffness after a long sleep is usual, and it is also the best time to judge whether the pain plan is working. A cat who takes ten minutes to loosen up is telling you something different from one who takes an hour.
Keep a simple log. Which surfaces she used, whether she groomed her back end, how long she took to get going. A month of that is far more useful to a vet at a review appointment than trying to remember.
Review the medication. Long-term pain relief in cats needs periodic blood tests to check kidney and liver function, and doses get adjusted. Do not stretch out a prescription to save a visit.
Re-check the flat every few months. The step that was the right height in March may be too high by September. Arthritis progresses, and the environment has to keep pace with it.
When should you get her checked?
Arrange regular health reviews appropriate to your cat, and seek advice for new changes regardless of age. Difficulty jumping, grooming or using the litter tray is worth discussing promptly. A population X-ray percentage cannot decide whether your individual cat needs treatment.
Our senior cat care page covers the other conditions that show up alongside arthritis at this age, particularly kidney disease and hyperthyroidism, which are common enough that a senior blood panel is usually run at the same visit. The vet directory lists clinics across Singapore if you need to find one near you.
The cats who do best with arthritis are the ones whose owners noticed a jump that stopped happening and mentioned it.
Sources and editorial review
AAHA: individual pain assessment and management; Merck Veterinary Manual: osteoarthritis and treatment evidence; Cornell: older-cat study and subtle mobility changes. Editorial source review: 12 September 2026. This is general information, not a diagnosis or individual treatment plan.
Common questions
- How common is arthritis in older cats?
- Cornell describes a study of 100 cats aged 10 or older in which 90% of those over 12 had radiographic evidence of degenerative joint disease. Imaging findings in that study do not establish pain severity or a diagnosis for your cat.
- Why doesn't my arthritic cat limp?
- Limping may be subtle or absent, particularly when multiple limbs are affected. Reduced jumping, grooming changes or difficulty with a litter tray can be clues. They still need assessment because other conditions can look similar.
- What are the earliest signs of arthritis in a cat?
- Things she has stopped doing. Abandoning a favourite high spot, hesitating before a jump, reversing down instead of jumping down, a matted or greasy patch over the lower back where she can no longer twist to groom, missing the edge of the litter tray, or objecting to being stroked along the back.
- What can I change at home to help an arthritic cat?
- Offer stable intermediate steps, an accessible litter tray, non-slip routes and comfortable resting choices. These support a veterinary pain plan. Do not assume air-conditioning itself is worsening arthritis or take away comfortable cooling.
- Can I give my cat painkillers for arthritis?
- Not without a vet. Many human painkillers, paracetamol especially, are lethal to cats, and several drugs used routinely in dogs are unsafe in cats too. Feline pain relief is genuinely specialised, so never use anything from your own cupboard or a dog's prescription.
- Do joint supplements help cats with arthritis?
- The evidence in cats is thinner than the marketing suggests. If you want to try one, treat it as an addition to weight management and environmental changes rather than a substitute, and tell your vet what you are giving so it can be taken into account.
- Should I rest a cat with arthritis?
- No, keep her moving gently. Complete rest stiffens joints further, and muscle supports the joint. Short low-intensity sessions with a wand toy at floor level, several times a day, are better than one long session or none at all.
- How is arthritis in cats managed long term?
- It is managed rather than cured. Expect periodic blood tests to check kidney and liver function on long-term pain relief, dose reviews, and a re-check of the flat every few months, since a step that was the right height six months ago may be too high now.
Sources
- AAHA: individual pain assessment and managementaaha.org
- Qualified guidance linked in the article.
- Merck Veterinary Manual: osteoarthritis and treatment evidencemerckvetmanual.com
- Qualified guidance linked in the article.
- Cornell: older-cat study and subtle mobility changesvet.cornell.edu
- Qualified guidance linked in the article.
