Meniscal injuries are mostly caused by torsional external forces. When a leg is weight-bearing and the lower leg is fixed in semi-flexion and external booth, the body and the femur are violently rotated internally, and the medial meniscus is between the femoral condyle and the tibia, which is subjected to rotational pressure, resulting in meniscal tears. 1. Joint pain: Pain occurs when the knee is in a certain position, and disappears when the position is changed. 2. Muscle atrophy: mainly in the quadriceps. Due to the damage of the meniscus, the knee joint movement is limited, and the muscle becomes wasted and atrophied over time; the more serious the muscle atrophy is, the more obvious the weakness of the lower limbs is. 3, walking inconvenience: meniscus due to long-term wear and tear or acute injury and rupture, that is, partial or complete loss of its original function, and even in the joint to form interference, joint interlocking, popping, affecting the normal movement of the knee joint, resulting in walking inconvenience trouble. Treatment The meniscus is a fibrocartilaginous tissue and has no blood supply, so recovery from injury is slow, making treatment very difficult. There are many ways to treat meniscus injuries. Physical therapy and massage can improve local circulation and promote nutrient supply to temporarily relieve symptoms but cannot solve the problem at the root. Surgery is traumatic, high-risk, and has many complications that are generally not considered. In Chinese medicine, meniscus injury is considered to be in the category of “tendon injury” in Chinese medicine. Mainly due to strain, trauma, infection and other reasons to the body’s immune system is low, the internal organs function deficiency, wind, cold, damp, evil invade the body stagnant joints, meridians and cause. The Western medical community is of the opinion that medicine is not capable of reversing the course of meniscal injury, and patients can only use painkillers, painkilling injections, and closures to relieve symptoms. However, with the recent medical research, people have conducted many studies on the biomechanical function of the meniscus and have increasingly recognized the importance of the biomechanical function of the meniscus, and believe that it is not advisable to simply remove the damaged meniscus, but to repair them, but because there is no blood inside the meniscus itself, but only blood circulation around it, it is possible that a meniscal injury with only a marginal tear will heal after a long period of recuperation. This is one of the problems in the orthopedic field, for which many studies have been conducted. 1.Acute stage: If the joint has obvious fluid (or blood accumulation), the fluid should be extracted under strict aseptic operation; if the joint has “interlocking”, the “interlocking” should be released by manipulation. The knee is then fixed in the straight position for 4 weeks with a tubular cast from the upper 1/3 of the thigh down to the ankle. The cast should be properly shaped so that the patient can walk with the cast on the floor. During the fixation period and after the removal of the fixation, the quadriceps should be actively exercised to prevent muscle atrophy. 2.Repair of meniscus blood supply area injury: Injuries to the meniscus blood supply area, especially longitudinal lacerations, can be healed by suturing surgery, which has a good prognosis, as confirmed by many experimental and clinical studies. However, in a 10-year prospective study, a number of patients who underwent this procedure were found to have x-ray signs of joint degeneration. This suggests that the biomechanical function of the repaired meniscus may not have been fully reestablished. 3. Repair of meniscus without blood supply: Injury to the meniscus without blood supply is relatively difficult and has become a challenge in knee surgery. Injuries to the meniscus without blood supply zone that are small and regular, such as barrel stem-like tears, are often partially resected with fair results. However, this compromises the biomechanical and biophysical function of the meniscus to a greater or lesser extent. Although many methods have been found to deal with meniscus injury without blood supply, clinical studies have been conducted less and this area needs to be explored. 4.Severe meniscus injury: When the meniscus is severely injured, only total resection surgery can be performed, at this time, frozen meniscus and meniscus prosthesis transplantation are feasible, but there are many difficulties in meniscus prosthesis transplantation, such as the biomechanical function of the prosthesis cannot meet the requirements, the prosthesis is difficult to fix, and joint degeneration is still obvious after transplantation. 5.Surgical treatment: Surgical treatment mostly refers to the use of arthroscopy to remove the free meniscus fragments, or to remove the damaged meniscus. Among them, removal of the meniscus is the last resort. After the meniscus is removed, the patient will lose or weaken the basic physiological functions such as jumping and weight-bearing. 6.Chinese medicine treatment: Research has confirmed that Chinese medicine ointment topical treatment has strong local penetration, the drug molecules are absorbed through the skin and participate in blood circulation, reaching the disease directly, and conducting to the meridians, tendons and bones through the skin, stimulating the regulatory function of the muscle, promoting functional recovery and achieving the purpose of rapid cure. It can help patients to get rid of meniscus disease and enjoy a healthy life again.