Patellar avulsion fractures are usually debilitating. Distal avulsion fractures are more common than proximal avulsion fractures.
Patellar avulsion fractures can result from strenuous exercise in athletic dogs or from direct impact to the patella.
Due to its proximity to the skin surface patellar fractures can be open and require immediate attention.
High quality craniocaudal and mediolateral radiographs of the stifle joint are needed.