Dog Patellar Luxation Welfare and Breed Selection

Patellar luxation affects small and toy breeds at high rates, causing lameness and pain that demands both treatment access and breeding reform to reduce prevalence.

Key Facts

Patellar luxation affects 7-16% of small breed dogs including Yorkshire Terriers, Chihuahuas, and Pomeranians
Grade I and II luxations may cause intermittent skipping gait; Grade III-IV cause persistent lameness
Surgical correction achieves excellent outcomes in 90% of Grade II-IV cases
Bilateral involvement occurs in 50% of affected dogs, requiring staged surgical correction
Selective breeding against patellar luxation is possible as heritability estimates are moderate to high

Welfare Considerations

Dogs with Grade III-IV patellar luxation experience persistent pain from abnormal joint mechanics and secondary arthritis development. The characteristic 'skipping' gait seen in lower-grade luxations may look harmless but indicates recurrent dislocation events that are painful. Early surgical correction before arthritis develops produces significantly better long-term outcomes. Breed clubs that require orthopedic health screening of breeding stock reduce disease prevalence and prevent avoidable suffering in future generations.

What You Can Do

Have small breed puppies evaluated for patellar luxation at first veterinary examinations
Seek orthopedic surgical consultation for dogs with Grade II or higher luxation
Support breed clubs that require OFA patellar health certification before breeding
Avoid purchasing dogs from breeders who do not screen for orthopedic conditions