I. Muscle strength 1. Ankle pump exercises: 500-1000 times a day for 1-2 months. Very important to prevent blood clots. 2.Quadriceps contraction: 500 times a day for 1-2 months. 3.Straight leg lift exercise: 30 times a day, each time continue until exhaustion. Note that the knee joint must be completely straight locked when lifting the leg, if not, then do the quadriceps contraction. 4.Static squat exercises: also known as zigzag stance, can be performed 10 weeks after surgery. Take care that the knee joint does not exceed the toe, practice at a painless angle for as long as possible each time, and as many times as necessary for the quadriceps to feel slightly sore the next day. Second, joint angle 1, knee extension: pillow under the heel, hollow out under the knee joint, completely relaxed. The longer you continue each day, the better. If you find that you cannot straighten, press a sandbag (rice or noodles are fine) above the knee joint (avoiding the patella) with a weight that will straighten the knee joint after 20 minutes. 2. Knee flexion: such as sitting leg drop, holding the knee, etc. 9-12 weeks angle recovery. Specific progress to the hands of the rehabilitation program. Ice must be applied after each knee flexion exercise. If there is no suture in the meniscus and no damage to the cartilage in the weight-bearing area. On the second day after surgery, you can walk on crutches under the protection of a brace and weight-bearing as appropriate. Other 1.After returning home, if the fever exceeds 38 degrees, accompanied by serious swelling, fever and severe pain in the joint, suspend all training and go to the hospital for review immediately. 2.The slight swelling and fever of the joints are normal and will last for a long time. 3. The so-called “0-40 degree active knee extension” is similar to the action of a soccer player shooting at goal or a soldier kicking a square step. Do not do it. If you have any other questions, please leave a message and I will add them later. Thank you!