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Lameness means a pet is limping, moving unevenly, or not using a leg normally. This can happen due to pain, weakness, swelling, a paw problem, joint problems, a muscle or tendon injury, or a nerve problem. In other words, limping is a sign, not a diagnosis.

Lameness grade: A common scale ranges from 0 to 5, with 0 indicating normal and 5 indicating non-weight-bearing. In clinics that use a 0 to 4 scale, grade 4 usually means a very severe limp with little to no useful weight-bearing.

Causes

Some causes are minor, such as a torn nail, a sore pad, a small cut, a mild sprain, or overdoing activity. Other causes are more serious, such as:

• a fracture
• dislocation
• cruciate ligament (knee) injury,
• bone or joint infection
• arthritis
• growth-related bone disease in young dogs,
• or a bone tumor.

Can a Limp Look Better at the Clinic?

Yes. This is very common. Some dogs move more normally once they arrive at the clinic because of excitement or adrenaline, so the limp may be much easier to see at home than in the exam room. Video from home can be very helpful for your veterinarian.

Does Every Limping Pet Need X-rays?

No. The decision to take X-rays depends on your veterinarian’s exam findings, your pet’s age and breed, how severe the limp is, whether there was trauma, how long the problem has been going on, and your wishes and finances. In some cases, rest, time, and pain control are all that is needed. In other cases, X-rays are recommended, and sometimes ultrasound, CT, MRI, joint fluid testing, or a referral to an orthopedic veterinarian may be the next step.

What Will Your Veterinarian Do?

Your veterinarian will watch your pet stand, walk, and, if possible, trot. They will feel the leg, joints, spine, and muscles, and look for pain, swelling, instability, wounds, or reduced range of motion. Sometimes, the problem can be found on the physical exam. Other times, more testing is needed to confirm what is wrong.

When is Limping More Urgent?

A pet that is limping should be seen right away, especially if your pet will not put any weight on the leg, cries out in pain, has major swelling, has an obvious wound or deformity, is dragging the limb, or became lame after trauma like a fall, car accident, or dog fight. Limping along with fever, shaking, poor appetite, or low energy is also more concerning because it may indicate a larger medical problem.

Can Rest Be Enough?

Sometimes. A mild limp with no major swelling, no severe pain, and normal appetite and behavior may improve with strict rest and monitoring. If the limp is getting worse, not improving, or recurring, your pet should be rechecked.

What About Cats?

Cats can be harder to read. Some cats do not show an obvious limp and instead hide, jump less, move more stiffly, or simply seem quieter than normal. Also, some cats may not cooperate during a gait exam in the hospital, making home videos even more useful.

The Bottom Line

Lameness in dogs and cats can range from a minor strain to a major injury or disease. Some pets truly do better with rest and pain control alone, while others need X-rays, advanced imaging, or an orthopedic consult. Even if the limp seems better at the veterinarian, that does not mean the problem is gone, so videos from home and a careful exam can be very helpful.