Description: Also known as luxating patella, this condition occurs when the kneecap (patella) moves around or displaces in and out of place, which can cause lameness. Typically caused by trauma but may also be caused by malformation during development. Smaller breeds are more prone to patellar luxation and it may be influenced by genetics.
Symptoms: A sudden yelp while running, limping, lameness, refusal to put weight on the leg.
Treatment: If left untreated, the grooves in the bones can gradually wear down, causing more frequent occurrences and pain, leading to possible arthritis. Patellar luxation is typically treated with surgery. The femur may undergo trochlear modification in which the groove is restructured to better contain the kneecap. The kneecap may be tied down to prevent deviation in the future in a procedure called lateral imbrication.
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