Patellar Luxation in Dogs Patellar luxation occurs when the
dog's kneecap (patella) is dislocated from its normal anatomic
position in the groove of the thigh bone (femur). When the
kneecap is dislocated from the groove of the thigh bone, it can
only be returned to its normal position once the quadriceps
muscles in the hind legs of the animal relax and lengthen. It is
for this reason that most dogs with the condition will hold up
their hind legs for a few minutes. A dislocated kneecap is one
of the most prevalent knee joint abnormalities in dogs. The
condition is most common in toy and miniature dog breeds such as
the Yorkshire Terrier, Pomeranian, Pekingese, Chihuahua, and
Boston Terrier. Female dogs are 1 1/2 times more likely to
acquire the condition. Patellar luxation is thought to be rare
in cats. Nevertheless, if you would like to learn more about how
it affects, please visit this page in the PetMD health library.
Symptoms and Types The specific symptoms of a dislocated kneecap
will depend on the severi