Understanding Medial Patella Luxation in Dogs and Cats
Medial patella luxation, a common condition in dogs and cats, particularly affects toy-breed dogs. However, it can occur in any breed of dog or cat. In toy breeds, such as Poodles, Chihuahuas, or Yorkies, it's prevalent. Approximately 80% of toy breed dogs may suffer from medial patella luxations. While some may not experience any discomfort, others may exhibit signs of lameness or intermittent leg holding.
Recognizing the Signs
One of the classic signs of medial patella luxation is lameness or intermittently holding the leg up. Dogs may alternate between using and not using the affected leg. However, not all dogs with luxations require surgery.
The Surgical Approach
Surgery for medial patella luxation typically involves two key components:
1. Assessing the Depth of the Groove
The trochlea, a groove in the thigh bone that holds the kneecap, may not form normally in affected dogs. Surgeons address this issue by deepening the groove. This process involves removing a block of cartilage, deepening the groove, and then repositioning the cartilage block. Known as trochlear block recession, this procedure aims to stabilize the kneecap.
2. Correcting Quadriceps Alignment
In most cases, the quadriceps in dogs with luxations do not align properly with the trochlea. This misalignment can pull the kneecap inward. To correct this, surgeons perform a tibial tuberosity transposition. This involves fracturing the tibial tuberosity, the point where the quadriceps tendon attaches, and realigning it with the trochlea. Once aligned, the tuberosity is pinned back into place.
Expectations Post-Surgery
Following tibial tuberosity transposition and trochlear block recession, the expectation is for dogs to regain full mobility without lameness. Dogs should be able to run, play, and lead a normal, active life once they have fully recovered from the procedures. Regular post-operative care and follow-up visits with the veterinarian are crucial to monitor the healing process and ensure optimal outcomes for your furry friend.
Let Us Know How We Can Help.
Capital Animal Hospital specializes in treating many of your pet's common conditions, including Cranial Cruciate Ligament Instability, Canine Hip Dysplasia, Patella Luxation, Traumatic Injuries, and more. We partner with veterinary practices to provide specialized orthopedic services. To find out how we can serve your pets, call us today at 803-722-1738 or schedule an appointment on our website. Refer a patient if you're a veterinarian looking for the best orthopedic care for your patients.