Preoperative care Teach patients preoperatively the exercises for isometric contraction of the quadriceps muscle. Male patients should quit smoking and drinking. One day before the operation, skin preparation, 20 CM above and below the knee joint, cleaned with soap and water, clipping hands, toenails, notification of dietary restrictions, removal of dentures, jewelry, replacement of patient’s clothes. Qi Yong, Department of Orthopaedics, Guangdong Second People’s Hospital Postoperative care (a) Postoperative care and rehabilitation are as important as the surgery itself. The purpose of postoperative care is fourfold: to avoid swelling, to restore joint function as soon as possible, to normalize muscle tone, and to allow the patient to perform normal activities and functional exercises. (2) Postoperative application of force-pressure bandage, the purpose of which is because the surgery is performed under an air tourniquet, so postoperative knee joints should be compressed and hemostatized by force-pressure bandage in order to reduce the blood seepage in the joint cavity and decrease the swelling of the knee joints. (3) Positioning Knee arthroscopy partial meniscectomy: the knee arthroscopically. Bedridden for 24 hours, according to the doctor’s advice, no weight-bearing activities on the day of surgery or within three days, four to five days can be partially weight-bearing, after 14 days can be weight-bearing walking Meniscectomy: postoperative bedridden for 2 weeks, the affected limb pressure bandage to reduce joint effusion, to prevent the early ground activities lead to traumatic arthritis (D) Functional Exercises: After the anesthesia disappears, encourage the patient to actively carry out the sparing of contraction of quadriceps muscle activities, inactivity for 24 hours. After the anesthesia disappears, encourage the patient to take the initiative to carry out the sparing activities of quadriceps muscles and not to move the knee joint within 24 hours. 24 to 48 hours after the operation, the quadriceps muscles should start to relax and contract, and exercise the joints of extension and flexion in order to restore the muscle strength, stabilize the joints and promote the absorption of the effusion. Functional exercise methods and precautions 1, in the whole treatment period, must adhere to the principle of gradual exercise quadriceps muscle, to prevent the occurrence of potential knee instability, which is the key to obtaining the best therapeutic effect. 2, the quadriceps muscle diastolic activity: A the affected limb is fixed, the muscles are taut and relaxed. B knee pressure activities, put the hand behind the knee, teach the patient to press the knee to the hand, repeated pressure and relaxation, once an hour, 5 minutes each time, pay attention to the quadriceps muscle relief in place, to prevent the use of the gluteus maximus muscle instead of the quadriceps muscle contraction. C walking exercise requirements after removal of sutures: heel – toe walking, not limping, each step must straighten the knee joint. Lower limb apparatus exercises: stirrups, resistance knee extension method, up and down step method. D Preoperative muscle atrophy, as long as there is no discomfort in the knee joint, postoperative exercise should be strengthened.