Patella Luxation Surgical Repair
Luxation is a condition where the patella (kneecap) rides outside its groove.
Patella Luxation Surgical Repair
Luxation is a condition where the patella (kneecap) rides outside its groove.
Pertinent Anatomy
The patella is a small bone that sits within a groove of the thigh bone (femur) at the level of the knee. The patella is connected to the shin bone (tibia) through the patellar ligament and the quadriceps muscle of the thigh bone works through the patella and patellar ligament to extend the shin bone. This forms the “extensor mechanism” and all components are well-aligned in normal pets.
Clinical Signs
Clinical signs are dependent on the severity of the disease and may be found incidentally in some patients.
- Skipping off of Affected Leg
- Kicking Out the Affected Leg
- Sudden Vocalization & Pain
- "Bow-Legged” or "Knocked-In" Knee Appearance
> 90%
Success Rate
Success is defined as an improvement in patellar luxation classification severity and return to function.
Owner satisfaction of pet’s mobility after surgery is favorable.
Surgery Process
The goal of surgery is to provide a deep groove for the patella to sit in and align the quadriceps, patella, and shin bone for pain-free movement. This is done through a combination of procedures that are unique to each patient and patellar luxation classification.
Bone Procedures:
- Trochlear Wedge Recession (groove deepening)
- Tibial Tuberosity Transposition (moving the attachment of the patellar ligament)
Soft Tissue Procedures:
- Fascial Release
- Facial tightening
Complications
- General Anesthetic Risks
- Incision Swelling (Seroma)
- Incisional Breakdown & Separation
- Surgical Site Infection
- Pin Migration
- Implant Failure
- Reluxation of Patella
- Delayed Bone Healing
- Bone Fracture
Recovery
Recovery will vary depending on severity of previous patellar luxation and procedures performed. An 8 week recovery is most often advised.
Timing of Surgery
Talk to your veterinarian and team surgeon! What is your pet's age at diagnosis? How many times a day does your pet "favor" the affected leg?