Patellar Luxation in Cats: Hindlimb Lameness and Surgical Options

Patellar luxation occurs in cats causing lameness and discomfort that surgical correction can resolve in significant cases.

Key Facts

Patellar luxation in cats involves the kneecap slipping from its normal groove in the femur
Devon Rex and Abyssinian cats have higher breed predisposition
Signs include intermittent hindlimb skipping, reluctance to jump, and abnormal hindlimb posture
Grades 1-4 describe severity - higher grades involve more persistent dislocation
Surgical correction involves deepening the patellar groove and realigning the patellar ligament
Many mild cases can be managed conservatively with physiotherapy and weight management

Welfare Considerations

Feline patellar luxation welfare varies significantly by grade. Grade 3-4 luxations with near-permanent dislocation cause persistent lameness and discomfort, restricting jumping - an essential cat behavioral outlet. Cats are stoic in expressing joint pain, meaning significant patellar luxation may be missed or attributed to normal cat behavior. Breeders of predisposed breeds should screen breeding animals. Surgical correction in appropriate candidates provides good outcomes, restoring normal joint mechanics and allowing return to comfortable function.

What You Can Do

Have your cat assessed if you notice any skipping gait, reluctance to jump, or hindlimb stiffness
Request orthopedic assessment for predisposed breeds at routine examinations
Discuss surgical referral with a veterinary orthopedic specialist for Grade 2+ cases causing welfare impact
Maintain healthy body weight to reduce mechanical load on affected joints
Provide ramps and step structures for cats with patellar luxation to reduce painful jump heights
If your cat is a Devon Rex or Abyssinian, advocate for patellar screening in breeding programs