Muscle exercise methods: 1, active contraction, 4-5 times a day, 10-20 times each time. 2, supine can be raised straight leg, keep the heel from the bed 15 cm, adhere to 15-20 seconds, put down rest, then lift, repeated training, can be from less to more. 3, can also be in the ankle plus the right amount of heavy exercises. 4, you can also lift the heel training: stand on the wall, heel lift, stand on the toes, repeated training, etc. Reminder: Do not do a large amount of exercise, such as running, high jump, long jump. Joint activity training, mainly in the non-weight-bearing state of flexion and extension of the knee joint. Joint activity exercise methods: 1, supine knee and hip flexion to do pedal bicycle-like action, 2-3 times a day, 50 times each time. 2. Do squatting and standing exercises without weight, 30-50 times a day, 2-3 times a day. Reminder: Do not do the knee joint semi-flexion rotation action, to prevent meniscus injury. Functional exercises should be done daily, preferably under the regular guidance of a physician.