Early management of an ankle sprain is important, with the goal of controlling pain and swelling as much as possible. The following measures can be implemented as early as possible within 48 hours of injury, referring to the PRICE principles of management of acute sports injuries: Protection: Protection. A cast or brace can be used to protect the injury from further injury. Rest: Rest (braking). Stop activity and avoid weight-bearing on the affected lower extremity. Ice: Apply cold compresses (ice, ice packs, cold products, etc.) to the swollen and painful area for 10-15 minutes, several times a day (may be every 2 hours). Do not let the ice directly touch the skin, use a towel to isolate it to avoid frostbite. Compression: Compression can be applied with an elastic bandage. It will stop further bleeding and prevent severe ankle swelling. Adhesive support bandages are not recommended to immobilize the ankle until the swelling subsides. Elevation: Elevate the lower leg and ankle as high as possible above the level of the heart (for example, lying down and placing a few pillows under the leg). The correct way to elevate the lower extremities should be: ankle over knee, knee over hip, and hip over body level. Prompt and effective first aid measures are important to speed up healing. Patients with severe sprains need to be seen in hospital immediately. Exclude the presence of a fracture, the need for crutches or a cast, and the need for medication. Your specialist will guide you through the treatment. The risk of re-strain after an ankle sprain increases by 40-70%, so functional ankle rehabilitation exercises after the acute phase will not only help to treat the sprain but also to prevent re-strain. Functional rehabilitation exercises should be carried out in a gradual manner and in the following order: a. Increase ankle mobility training Sit upright, straighten the knee joint and do the following exercises: Ankle dorsiflexion pull Pull the foot backward to the limit and hold it for 15 seconds, recover and repeat 10 times. Ankle plantar flexion pull Pull the foot forward to the limit and hold for 15 seconds, recover, repeat 10 times. Ankle inversion pull Pull the foot inward to the limit and hold for 15 seconds, recover, repeat 10 times. External ankle pull Pull the foot outward to the limit and hold for 15 seconds, recover, repeat 10 times. Sit on the edge of a chair or bed with the knee flexed and do the following exercise: “Writing exercise” Use the c-toe as a pencil to write. Isometric strength training Ankle valgus isometric strength training Sitting position, the affected foot laterally against the table leg, wall or door panel, force the muscle contraction to the outside and hold it for 15 seconds, recover, relax for 10 seconds, repeat 5-10 times. Ankle inversion isometric strength training Sitting position, the affected foot medially against the table leg, wall or door, force the muscle contraction to the inside and hold for 15 seconds, recover, relax for 10 seconds, repeat 5-10 times. Third, resistance strength training Each exercise requires the use of rubber bands, if there is no rubber band, the use of towels to add resistance by hand can also be. Ankle dorsiflexion resistance strength training Straighten the knee, exercise the ankle joint so that the foot is facing backward resistance to the rubber band and adhere to 15 seconds, recovery, repeat 10 times. Ankle plantarflexion resistance training Straighten the knee, exercise the ankle joint so that the foot is forward to resist the resistance of the rubber band and hold it for 15 seconds, recover, repeat 10 times. Ankle inversion resistance training Straighten the knee joint, exercise the ankle joint so that the foot resists the resistance of the rubber band inward and hold it for 15 seconds, recover, repeat 10 times. Ankle valgus resistance training Straighten the knee joint, exercise the ankle joint so that the foot resists the resistance of the rubber band outward and hold it for 15 seconds, recover, repeat 10 times. Fourth, semi-weight training sitting calf muscle lifting exercises sitting on a chair, the affected foot on the ground, keep the toes on the ground as much as possible to lift the heel, recovery, repeat 10 times. Single-leg stand Hold the wall, table or other fixed objects to stand, weight to the affected foot share part and maintain the position for 15 seconds, then put the weight on the healthy foot, repeat 10 times. V. Full weight training Single-leg stand Stand, lift the healthy foot, so that the weight is fully burdened by the affected foot, hold for 15 seconds. Return to the starting position and repeat 10 times. VI. Precautions During the rehabilitation process, if some of the following conditions occur, you need to come to the hospital in time to avoid delay: 1. Swelling and pain are very obvious after an acute sprain, and accompanied by a lot of skin bruising, with obvious pressure pain and restricted activities; 2. Swelling and pain slowly subside after rest and braking, but there will be pain when walking more activities, accompanied by joint swelling (more likely to occur on uneven ground or stairs); 3. 3.The swelling and pain improve, but the “weak leg” often occurs when walking or exercising normally, and may be accompanied by unstable symptoms such as falling; 4.History of ankle sprain, re-torsion during exercise, and a history of repeated sprains or joint loosening and instability: 5.Subsequent redness and heat of the whole foot and ankle with pain, which may develop into chronic pain or Complex focal pain syndrome (CRPS).