It is generally not necessary to wear a cast after removing the stitches after patellar fracture surgery, but a brace can be worn appropriately according to the situation. When the patella fracture, the knee flexion device is destroyed, causing the patient to have difficulty in knee flexion, after surgical repair, the knee flexion device can be restored, but it needs functional exercise, once wearing a cast, it will cause stiffness of the knee joint, limiting the functional exercise, resulting in poor knee flexion and extension function, etc., so try not to wear a cast after the patella fracture surgery. Because of the need for functional exercise after patella fracture surgery, knee flexion and extension support can be worn according to the specific situation, which can effectively adjust the knee flexion and extension angle, strengthen the knee mobility, so that the knee joint can get early exercise. Patella is an important bone tissue in human body, once the discomfort occurs after the fracture surgery, you should go to the hospital in time, under the guidance of professional doctors for diagnosis and treatment.