Do puppies with patellar luxation need surgery?

This animation depicts patellar groove development in a growing puppy. A deep groove develops when the patella is central. A normal groove won’t develop if the patella luxates before the growth spurt at 2-8 months of age. The earlier luxation occurs, the greater the degree of deformity. Normal patellar groove development relies on central alignment relative to the femur. Early luxation causes patellar groove dysplasia. The consequence in many affected puppies is a flat or convex surface contour. Early surgical intervention in growing puppies limits or reverses developmental bone deformities and groove dysplasia.
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Do puppies need surgery? My 9month old puppy has this

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Here's the full article, which I hope you find helpful: www.vetlessons.com/patella