A high patella is a patella that is abnormally high relative to the femur, tibia, and trochanter with abnormal imaging measurement indices, among other things. Elevated patella is commonly referred to because the patella, or kneecap, is high relative to the thigh bone (femur) and lower leg bone (tibia), and has poor contact at the joint, which can cause symptoms such as pain and weakness in knee extension. Imaging is usually evaluated using lateral films after marking the position of the femur and patella, and the presence of abnormal imaging indices can clarify the diagnosis. It is medically defined as an abnormally high patella relative to the femur, tibia, and femoral trolley, and is accompanied by a decrease in the contact area of the femur and patella or a decrease in the overlap area of the patellofemoral cartilage, which decreases the stability of the bone and requires an increased angle of flexion of the knee in order to integrate with the femoral trolley. If there is any discomfort, it is recommended to seek medical attention as soon as possible for diagnosis and treatment.