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My dog's leg cramps and he can't straighten it. Is it a patella?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Male | neutered | 11 lbs

I have a 8 yr old poodle cross. He was neutered as a puppy about 7 months ago my female was in heat after that time his penis would not retract completely I took him to vet they did surgery on the sheath opening did not fix the problem. I have had him back to vet 2 times since. they tell me I will have to lubricate for the rest of his life. Last week when jumping in a chair his leg seem to cramp up. He did not cry he just could not straighten the leg for a few minutes. This continues to happ

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on January 17th, 2017

In small breed dogs, a common joint problem is a luxating patella. This is when the knee slips out of it's correct anatomical position, causing sudden lameness and an inability to straighten the leg. It can then pop back into place, allowing the dog to use his leg normally. This could be happening to Lucas. I would have him seen by a vet in the morning, who can do a physical exam and lameness to diagnose if he does have a luxating patella. If it is severe enough, Lucas will need surgery to fix it.

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