Patellar Luxation (PL) in the Kelpie
What is Patellar Luxation?
Patellar Luxation (PL) simply means that the kneecap (patella) slips out of its normal groove. The kneecap should slide smoothly up and down when the leg bends. When it dislocations, the dog temporarily cannot put proper weight on the affected leg.
How to Recognize It?
The most classic sign is a brief ‘skipping’ or ‘hopping’ gait while running. The dog hitches the hind leg for a step or two until the kneecap pops back into place, after which they continue walking completely normally. Mild cases cause little to no discomfort, while more severe forms can eventually lead to joint wear (osteoarthritis).
What Causes It?
Patellar luxation typically has two main causes:
Genetic predisposition: The groove in which the kneecap rests is too shallow, or the alignment of the leg puts abnormal tension on the knee joint.
Trauma: An accidental twist, bad jump, or fall that damages the ligaments holding the kneecap in place.
Kelpies and PL
Patellar Luxation is primarily seen in small and toy breeds. In the Australian Kelpie, it is fortunately a rare condition. Because Kelpies are athletic and well-muscled dogs, strong leg muscles provide natural support to the knee joints. Nonetheless, responsible monitoring helps keep our breed athletic and sound.
