[3] There have been several reports of patella luxation in other species such as miniature pigs, alpacas, llamas, cattle and goats.

[4] Rarely, it can be caused by some form of blunt trauma, but most frequently, it is a developmental, congenital defect.

Often, a dog owner might be told that his or her pet has "loose knee", but this is not a medical term, and it is not correct to use it interchangeably with luxating patella.

Even with luxating patella, symptoms such as intermittent limping in the rear leg might be mild or absent.

A therapeutic dosage of glucosamine can be used as a preliminary treatment to strengthen ligaments and the surrounding tissues of the joint and can delay or prevent surgery.

Most cases of patellar luxation are medial, and this is frequently a congenital problem in toy- and miniature-breed dogs.