Sprained tendon of the knee can be relieved by daily care, medication or physical therapy, and if the injury is serious, surgery is needed. 1. Daily care: after the discovery of knee tendon sprain, you need to emergency braking, pay attention to rest. 72 hours after the occurrence of traumatic swelling, pain, etc., you can use the ice water bag for ice packs, and then change to hot packs after 72 hours, can accelerate blood circulation. 2. Medication: If there is severe pain after the sprain and you can’t move normally, you can take oral painkillers, such as celecoxib and ibuprofen. 3. Physiotherapy: If the pain can not be eliminated within a short period of time, physiotherapy can be carried out under medical guidance, including infrared physiotherapy, microwave physiotherapy, etc., which can eliminate swelling and assist in anti-inflammatory, and can be immobilized with a brace if the injury is serious. 4. Surgery: If the injury is serious, ligament rupture may require surgery to rebuild the ligament for treatment. After a knee sprain, avoid strenuous exercise for a short period of time, otherwise the knee will be damaged again. If necessary, it is recommended to consult a doctor in time, and under the guidance of a physician, do not blindly use drugs.