Patellar Luxation Handout
What do I need to know about patellar luxation?
The patella is the bone we know as the knee cap. Your dog's thigh bone (femur) has a groove in which the patella slides up and down as the knee joint is bent back and forth. This If your dog is born with a shallow groove or the groove becomes shallower with age and wear it may allow the patella to luxate, or "pop" out of place.