Why Is My Dog Limping? Injury vs Arthritis

Limping that appears suddenly is usually an injury; limping that creeps in over weeks or months is usually arthritis. That one question — how fast did it start — sorts most cases before you get anywhere near the clinic.

This page helps you describe what you are seeing and judge the urgency. It is not a diagnosis and does not replace a veterinarian, and nothing here is a reason to sit on a leg your dog will not use.

First, the urgency question

Most limps can wait for a normal appointment. A few cannot.

If you are unsure, phone the clinic and describe it. Telephone triage is what reception and nurses do all day and it costs nothing.

Sudden limping: what it usually is

A limp that appears in one afternoon is a mechanical problem until proven otherwise.

• Paw problems. A torn nail, a cut pad, a grass seed between the toes, a stone, or a bee sting. This is the first thing to check, because it is common, it is visible, and it explains a dramatic limp in a dog that is otherwise completely well.
• Soft-tissue strain. The canine equivalent of a pulled muscle after a hard session at the park. Usually improves noticeably within a couple of days of genuine rest.
• Cruciate ligament injury. A partial or complete tear of the ligament that stabilizes the knee. Classic pattern: a sudden yelp mid-run, then toe-touching on a back leg, then apparent improvement, then it comes back. This one needs a vet, because the partial tears that seem to get better are the ones that go on to tear fully.
• Fractures and dislocations. Loud, obvious, and not subtle. Same-day.

Gradual limping: what it usually is

A limp that has been building for weeks tends to be a joint problem.

• Osteoarthritis. The most common cause in middle-aged and older dogs. The tell is stiffness that is worst after rest and after cold nights, and that eases once the dog warms up.
• Hip or elbow dysplasia. Developmental joint problems, more common in large breeds, and often first noticed as a bunny-hopping run or reluctance on stairs in a young adult dog.
• Patellar luxation. A kneecap that slips out of its groove. Typically a small-breed dog that skips for a few steps with a back leg held up, then puts it straight back down and carries on.
• Bone tumors. Uncommon, but a persistent lameness with a firm swelling over a leg bone in a large or giant breed is a reason to be seen promptly rather than to wait another month.

Age itself is not a cause. "He is just getting old" is where treatable arthritis goes undiagnosed for a year.

What to do at home while you wait

The video is genuinely useful. Dogs frequently stop limping in the exam room, and a ten-second clip of your dog walking down the hallway at home saves an appointment.

On painkillers, one line and no exceptions: do not give your dog anything from the human medicine cabinet. Ibuprofen, naproxen and acetaminophen cause serious harm in dogs, and even aspirin complicates the safer prescription drugs a vet may want to start. Dog-licensed anti-inflammatories work well, but they are prescription and the dose is set by your vet by body weight, often after bloodwork. There is no home version of that decision.

What the vet visit involves

Expect a hands-on orthopedic exam first — the vet flexes and extends each joint and watches your dog walk and trot. That alone often localizes the problem. From there it may be X-rays, which usually means sedation to get the positioning right, and sometimes referral for advanced imaging or surgery.

Cost varies widely by region and clinic, so ask for an estimate when you book and again before imaging is added. Our routine care cost guide covers how exam and diagnostic fees are usually structured, and the pet cost calculator helps you see where an unplanned orthopedic workup lands against the rest of the year.

What to do next

If your dog will not bear weight, is in obvious distress, or has been hit by anything, stop reading and phone a vet. Otherwise: check the paw, restrict to short leash walks, film the limp, and book an appointment rather than waiting to see if a fortnight fixes it. Limps that keep coming back are the ones that become expensive, and a dog that is hiding pain well is still in it.