Arthritis in Cats: Why Limping Is Rarely the First Sign

Most people picture a limping dog when they think of arthritis. Cats get it too, often quite commonly, but a cat with sore joints rarely limps in any obvious way. That mismatch between how common the disease actually is and how rarely it looks like anything is a big part of why it goes undiagnosed so often.

How common osteoarthritis actually is in cats

Radiographic studies have consistently found joint degeneration in a large share of cats, especially older ones. A 2005 retrospective study in the Journal of Small Animal Practice found radiographic signs of osteoarthritis in a substantial proportion of cats examined, while a separate 2005 study in Veterinary Record of 218 cats found degenerative joint disease in 33.9% of the hospital population studied, with appendicular joint osteoarthritis specifically present in 16.5%. Prevalence climbs further with age.

The gap between disease and visible limping

The real problem isn't that vets can't find arthritis on an X-ray. It's that the X-ray findings and the cat's visible behavior often don't match up. A 2012 review in the Journal of Feline Medicine and Surgery, by veterinary orthopedic specialist David Bennett and colleagues, points out that in one study, roughly 90% of geriatric cats had radiographic degenerative joint disease, yet only about 4% were actually seen limping. Cats are simply built to mask overt lameness far more effectively than dogs do.

What to actually watch for instead of limping

According to that same review, the signs owners are far more likely to notice are changes in behavior and routine rather than a classic limp: jumping up onto furniture less often or from a lower height than before, sleeping more and playing less, a decline in grooming that leaves the coat looking unkempt or matted, hesitating or struggling at the litter box (especially one with high sides), and a general increase in grumpiness or a more withdrawn temperament. Any one of these alone could mean plenty of things, but a cluster of them showing up together in an older cat is a reasonable prompt to ask a vet about arthritis specifically, rather than writing it off as "just getting old."

How vets actually assess it

Physical exams, watching how a cat moves, and X-rays all play a role, but given how well cats hide overt pain, much of the real diagnostic weight rests on the owner's account of day-to-day behavior changes at home, which is why a detailed history often matters as much as the exam itself. Some clinics also use structured facial pain assessment as one piece of the picture, which we cover in more depth in our article on the Feline Grimace Scale.

Managing it

Feline arthritis is manageable, even though it isn't curable. Options include carefully dosed NSAIDs formulated and approved for long-term feline use, a newer monthly injectable monoclonal antibody treatment aimed specifically at the pain pathway, weight management (since extra weight adds direct load to already-affected joints), and simple home adjustments like low-sided litter boxes, ramps or steps to favorite resting spots, and orthopedic bedding. Most cats show a real, noticeable improvement in activity and mood once appropriately treated.

Frequently asked questions

At what age should I start watching for arthritis in my cat?
Signs can appear from around 7 to 10 years old and become substantially more common past 12, though it's reasonable to mention any of the behavior changes above at any age if you notice them.

Can kittens or young cats get arthritis?
It's uncommon but possible, usually secondary to a joint injury, developmental joint condition, or, rarely, an underlying inflammatory disease, rather than the typical age-related wear seen in older cats.

Is human arthritis medication safe to give my cat?
No. Many human pain medications, including common over-the-counter NSAIDs, are dangerous or fatal to cats. Only medications specifically prescribed by a vet for feline use should be given.

Sources

• Godfrey, D.R., "Osteoarthritis in cats: a retrospective radiological study," Journal of Small Animal Practice, 46(9) (2005): 425-429
• Clarke, S.P. et al., "Prevalence of radiographic signs of degenerative joint disease in a hospital population of cats," Veterinary Record, 157(25) (2005): 793-799
• Bennett, D., Zainal Ariffin, S.M.B., Johnston, P., "Osteoarthritis in the cat: 1. How common is it and how easy to recognise?", Journal of Feline Medicine and Surgery, 14(1) (2012): 65-75
• EveryCat Health Foundation, "Osteoarthritis in Cats"

This article is for general information and isn't a substitute for advice from your own veterinarian, who can properly diagnose and manage joint pain in your specific cat.