Before revision: In veterinary surgery it is often employed to remedy a displaced kneecap ( "patellar luxation" ) by deepening the trochlear sulcus, the groove on which the patella normally sits.
After revision: In veterinary surgery it is often employed to remedy a displaced kneecap ( luxating patellaat the end of the femur ) by deepening the trochlear sulcus, the groove on which the patella normally sits.