Luxating Patella

Image of dog with hind leg shaved.

Luxating patella is a condition where the kneecap (patella) moves out of its normal position. Luxating patella is one of the most common knee joint abnormalities of dogs, but it is only occasionally seen in cats. It may affect one or both of the knees. In some cases it moves (luxates) towards the inside of the knee, and in other cases it luxates towards the outside of the knee. Luxation to the inside of the knee is the most common form seen; it is most commonly seen in the small or miniature breeds of dogs such as Poodles, Maltese, Yorkies, and Chihuahuas. Luxations towards the outside of the knee are seen less frequently. It can be present in many breeds, but is seen especially in Newfoundlands.

There are four grades of patellar luxation:

  • Grade I- the kneecap can be manually luxated but the kneecap returns to its normal position when the pressure is released.
  • Grade II- the kneecap can spontaneously luxate out of position with just normal movement of the knee.
  • Grade III- the kneecap remains luxated most of the time but can be manually reduced into the normal position.
  • Grade IV- the patella is permanently luxated and can not be manually repositioned

Dogs frequently start with a Grade I or Grade II and worsen over time to a Grade III or IV. Many people are not aware their pet is affected, but a luxating patella can cause pain. Owners may see the pet limp on a rear leg, or they may see them shake a rear leg to try to snap the kneecap back into place.

A serious consequence of patellar luxation is that it predisposes the dog to a rupture of a ligament inside the knee called the anterior cruciate ligament (ACL). ACL ruptures are very painful, at least initially, and usually the dog doesn't bear weight on the affected leg. Surgery is indicated for any case that is causing lameness or pain. Owners may also elect corrective surgery as a way to prevent an ACL.

Call to schedule your pet's wellness or urgent care exam now: (952) 758-6722

Testimonials

  • We have been clients of New Prague Animal Care for over 13 years. They have provided exceptional and compassionate care for our “pack” (6 dogs and 3 cats). As a professional dog trainer, breeder of Best in Show and Master Hunter Retrievers as well an owner of multiple kennel/ doggy daycare facilities (30+ years), I have worked with numerous veterinary clinics both in the Twin Cities and nationwide. Dr. Steve and his crew rate among the finest I have worked with. The clinic has all of the fea

    ...
    Read More - Kathryn N
  • My dad has taken all of his dogs there for years, and I take mine there as well. Dr. Lavalle's bedside manner is amazing, and his staff are so genuine and caring. I always have, and will continue referring people to take their pets here. They are hands down the best veterinary care in the area!

    - Amber C
  • Have taken our dogs to Dr. Lavallee for over 10 years and he is great with each of them. He and his staff are very caring and helpful.

    - Barb S
  • Middle of a snow storm a few days ago. My little puppy was injured. I live in Faribult. Vet offices were closed in town. They actually called me while in route to see if I was ok. They were so good with the puppy. The cost was very reasonable. Called today to see how everything was going. I really was very impressed with this office. I recommend this place.

    ...
    Read More - Wendy E
  • Awesome experience! My pets love the care they get from Dr. Lavallee and his staff! They are not just a number; they care for them like my babies are family! Would highly recommend them!

    - SGGM
  • Found a 6-wk old kitten on the side of the highway and brought it in at 7pm on emergency basis. I was blown away by the compassion of Dr. Johnson's team. What a great experience. True animal people!

    - Anna H
  • Moved to New Prague and found this place for our dog.. Such great service, friendly staff, amazing Dr. and very accommodating to all of our needs!! Highly recommended by my pet family!!!

    - Kerri N
  • We love New Prague Animal Care, they are always so kind and caring, from the phone calls to when you walk in. We take our Siberian Husky Bandit in and he gets so much attention, well loved. We've had to take him in twice for emergencies, the in house testing was great, Dr. Johnson was able to resolve the issue almost immediately. I wouldn't take him anywhere else.

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    Read More - Myra C

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