Arthritis in Cats

Arthritis is far more common in cats than most owners realize — a large share of cats over ten have degenerative joint changes, and many over twelve do — yet it's one of the least diagnosed conditions in feline medicine. The reason is that cats don't limp the way dogs do. They simply do less: fewer jumps, shorter play sessions, more sleeping, and a coat that gradually looks less well kept. Those changes get filed under "just getting older" when they're often treatable pain. There's a lot that helps, from vet-prescribed pain relief to a $15 step by the sofa, and the cat cost calculator helps you plan for ongoing management.

What Is Arthritis in Cats?

Arthritis — more precisely degenerative joint disease — is the gradual wearing away of the smooth cartilage that cushions a joint. Without that cushion, bone moves against bone, the joint becomes inflamed, and movement hurts.

In cats it most commonly affects the elbows, hips, knees and spine. The elbow is a particularly common site, which surprises people who expect hips to dominate.

It develops slowly over years, and it's usually bilateral — affecting both sides roughly equally. That detail explains almost everything about why arthritis goes undiagnosed in cats. A dog with one bad hip limps, because it has a good leg to shift weight onto. A cat with two sore elbows has nowhere to shift the weight, so instead of limping it simply moves less.

Most cases are age-related wear, but it can also follow an old injury, or occur in breeds with known joint issues — Maine Coons with hip dysplasia, Scottish Folds with the cartilage disorder inherent to the breed, Persians and Siamese with their own predispositions.

It's genuinely common. Studies looking at X-rays of older cats consistently find degenerative changes in a large proportion of them, including plenty whose owners reported no problems at all.

Why Do So Many Owners Miss It?

Three reasons that stack up.

Cats don't limp. Covered above, and it's the biggest single factor. Owners reasonably assume that no limp means no pain.

The changes look like ageing. A cat that sleeps more, plays less, and jumps less is doing exactly what people expect an old cat to do. "He's just slowing down" is the most natural interpretation in the world, and it's frequently wrong — or rather, the slowing down is real but it has a treatable cause.

Cats hide pain instinctively. As animals that both hunt and get hunted, concealing weakness is deeply wired. A cat in genuine discomfort will still eat, still purr, still greet you at the door.

The result is a condition that's widespread, treatable, and largely invisible unless you know what to look for. The general picture of feline ageing is in signs your cat is getting old, but arthritis deserves separating out because it responds so well to help.

What Are the Signs?

Watch behavior, not gait. These are the ones that matter.

Movement and access:

• Hesitating before jumping, gathering itself where it used to spring
• Jumping up in stages — chair, then table — instead of in one go
• Choosing lower places to sleep, abandoning windowsills and wardrobe tops
• Struggling with stairs, or taking them one at a time
• Landing heavily rather than lightly

Grooming and appearance:

• A scruffy or matted coat, particularly over the lower back, hips and base of the tail
• Overgrown claws, because scratching posts get used less
• Sometimes over-grooming one area, licking a sore joint until the fur thins

Litter tray:

• Accidents beside the tray, or missing the edge
• Reluctance to use a high-sided or covered tray
• Constipation, sometimes, because posturing is uncomfortable

Behavior and temperament:

• Playing less, or tiring quickly
• Hiding more, or becoming less sociable
• Objecting to being lifted, brushed or stroked over the back
• Grumpiness in a cat that was previously easygoing

That last group is worth emphasising. A senior cat that has become snappy is very often a senior cat that hurts. It's a personality change with a physical cause, and it frequently reverses with treatment.

How Is It Diagnosed?

Mostly by history and examination, with X-rays confirming.

What you tell your vet matters enormously here — more than in almost any other condition. Vets can't observe your cat jumping onto a kitchen counter in a consulting room. Your account of what's changed at home is the primary diagnostic material.

So before the appointment, it's worth noting:

• Places your cat used to go and no longer does
• Whether jumping has changed in style or height
• Any change in grooming, litter tray habits or temperament
• Whether anything seems worse in cold weather or after rest

Video is genuinely useful. A thirty-second clip of your cat approaching a jump, or walking across a room, tells a vet far more than a description. Most vets welcome it.

Physical examination. Your vet will gently flex and extend joints, feeling for thickening, reduced range of motion or a pain response. Cats are stoic, so a subtle reaction matters.

X-rays confirm degenerative changes and rule out other causes. They usually require sedation.

Bloodwork, particularly in older cats, to check organ function before starting any long-term medication and to rule out other conditions causing similar signs.

One honest note: X-ray findings and pain levels don't always match neatly. Some cats with dramatic-looking X-rays cope well; others with mild changes are clearly uncomfortable. Treatment decisions follow the cat, not the picture.

How Is It Treated?

Several strands, usually combined — and the good news is that most cats respond well.

Pain relief. The cornerstone. There are medications licensed specifically for long-term feline arthritis, including anti-inflammatories formulated for cats and a newer class of injectable treatment given monthly that has changed the picture considerably for many cats. Your vet will choose based on your cat's kidney and liver function, which is why bloodwork comes first.

This is the point for the most important warning on this page: never give your cat human painkillers. Paracetamol is lethal to cats even in small amounts. Ibuprofen and aspirin are also dangerous. Every year vets see cats poisoned by owners trying to help. If your cat seems sore, the answer is a phone call, not a medicine cabinet.

Weight management. Every extra pound loads already-painful joints. Weight loss is one of the most effective non-drug interventions available, though it must be gradual and vet-supervised — cats are prone to serious liver problems if food intake drops sharply. The starting point is in is my cat overweight.

Joint supplements. Glucosamine, chondroitin and omega-3 fatty acids are commonly recommended. Evidence is mixed and they're not a substitute for pain relief, but many vets consider them a reasonable addition. Ask before starting anything.

Environmental changes. Free or cheap, and often the most immediately noticeable improvement. Covered below.

Physical therapy, in some cases — gentle mobility work, or hydrotherapy at specialist centers, though many cats have opinions about water.

What Helps at Home?

This section is the practical heart of it, and most of it costs very little.

Make everything reachable. A step or low stool by the sofa, the bed and the windowsill. Ramps where they suit. A cat that has stopped getting onto your bed often starts again the day a step appears.

Swap the litter tray. A low-sided, open tray is one of the highest-impact changes you can make. High walls and covered entrances are genuinely difficult for a stiff cat, and "accidents" frequently stop the moment access gets easier. Put a tray on each floor so nobody has to manage stairs urgently.

Raise the food and water bowls slightly, so your cat doesn't have to crouch low to eat.

Provide warm, soft, easy-access beds. Warmth helps stiff joints noticeably. A padded bed somewhere draught-free, low to the ground, is a small kindness with a real effect.

Help with grooming. Gently brush the areas your cat can no longer reach — lower back, hips, base of the tail. Go carefully, since those areas may be sore.

Keep claws trimmed, since reduced scratching means they don't wear down and can grow into the pads.

Non-slip surfaces. Rugs or mats on laminate and tile give a stiff cat confidence and prevent slips.

Encourage gentle play. Short, low-impact sessions keep joints moving and muscle from wasting. Little and often beats one long session.

Broader senior guidance is in how to care for a senior cat.

How Do You Know Treatment Is Working?

Not from your cat telling you — from watching the same specific things that flagged the problem.

Because cats hide pain, they also hide relief. There's rarely a dramatic moment. What happens instead is that over two to six weeks, small things quietly come back, and if you're not watching for them you can conclude nothing has changed.

Pick three things to track before you start. Write them down. For example: does she get onto the windowsill; does she come downstairs in the evening; is the fur over her back tidy. Then check them fortnightly.

Improvements owners commonly report, roughly in the order they appear:

• More willingness to jump, or jumping in one movement again
• Returning to old sleeping spots that had been abandoned
• Better coat condition over the back and hips, as grooming resumes
• More play, often the last to return
• A friendlier, more sociable cat — frequently the change people mention most

That last one catches owners off guard. A cat that had become withdrawn or snappy often becomes affectionate again, and it's a strong hint that the grumpiness was pain all along.

Give it time. Anti-inflammatory medication often shows effects within a week or two; the monthly injectable treatment may take a couple of cycles. Weight loss and muscle rebuilding take months.

Report side effects promptly. Reduced appetite, vomiting, diarrhea or lethargy after starting medication should always prompt a call. Long-term anti-inflammatories need periodic bloodwork to check kidney and liver values, which is why those recheck appointments matter.

And if nothing has changed after a fair trial, say so. There are several treatment options, and moving to a different approach is routine rather than a setback.

What Does It Cost to Manage?

Realistically $500 to $1,500 a year for ongoing management, plus the diagnostic costs at the start.

The home adaptations row is worth pausing on. It's the cheapest line in the table and frequently the one owners notice most — a low-sided litter tray and a step by the sofa can visibly change a cat's day for under $50. General pricing is in cat vet costs explained, and the wider senior care picture in the senior cat health checklist.

Frequently Asked Questions

What are the signs of arthritis in cats?

Hesitating before jumping, choosing lower resting spots, a scruffy coat over the lower back, missing the litter tray edge, playing less, and becoming grumpy when handled. Cats almost never limp, because arthritis usually affects both sides equally.

At what age do cats get arthritis?

It's most common past ten, and very common past twelve, but it can appear earlier — particularly after an old injury or in breeds with known joint problems such as Maine Coons and Scottish Folds. Many affected cats show no obvious signs at all.

Can I give my cat human painkillers for arthritis?

No — never. Paracetamol is lethal to cats even in small doses, and ibuprofen and aspirin are also dangerous. There are medications licensed specifically for feline arthritis, so speak to your vet rather than reaching for anything from a human medicine cabinet.

Is arthritis in cats treatable?

It can't be reversed, but it responds well to management. Prescription pain relief, weight control, joint supplements and simple home changes together make a real difference, and many owners describe their cat becoming noticeably more active and sociable within weeks.

How much does it cost to treat arthritis in cats?

Roughly $500 to $1,500 a year for ongoing management, plus $300–$800 for initial X-rays and bloodwork. Home adaptations such as steps and a low-sided litter tray cost under $200 one-off and often produce the most visible improvement.

Why doesn't my arthritic cat limp?

Because arthritis in cats is usually bilateral, affecting both sides roughly equally — so there's no good leg to shift weight onto. Instead of limping, cats reduce activity. The absence of a limp tells you very little about whether a cat is in pain.

Arthritis is probably the most under-treated source of discomfort in older cats, precisely because it looks so much like ordinary ageing. If your cat is over ten and has quietly stopped jumping onto the things it used to, that's worth a conversation with your vet rather than acceptance. Treatment often produces a change owners describe as getting their cat back — and even before any medication, a low-sided litter tray, a step by the sofa and a warm bed can make a genuine difference this week. Plan the ongoing costs with the cat cost calculator.