If a patient has knee pain and is unable to bend, treatment should first identify the cause and then take symptomatic treatment according to the specific cause. If a patient has a meniscal injury in the knee joint that causes pain and inability to bend, the patient should first have the meniscus repositioned, be instructed to reduce activity, and have topical ointments applied to the knee joint to activate blood circulation and remove blood stasis. If the patient has osteoarthritis of the knee joint that causes pain and affects the knee joint movement. The patient may be instructed to keep the knee joint warm and not to overwork it, and may be given local herbal fumigation or acupuncture or moxibustion. If the knee pain is severe, minimally invasive surgery can be performed to clean the knee joint. In addition, the patient should be instructed to take oral anti-osteophytic drugs after surgery to slow down the aging and degeneration of the bones, and to take calcium supplements.