Sports on campus are an important part of quality education. Sports can make us have a stronger body, but they can also bring side effects – sports injuries. They are at the stage of growth and development, their bones and joints and other organs are not fully developed, muscle strength is still weak, poor neural coordination, unstable technical movements, psychological immaturity, lack of self-protection awareness, etc., coupled with the intensity of sports and lack of warm-up, protection and other reasons more likely to occur sports injuries. The highest probability of student sports injuries is soft tissue contusions and skin abrasions, followed by ligament and muscle strains, sprains, fractures and dislocations, and other injuries. Sports injuries are closely related to the type of sport. How to avoid sports injuries in daily sports? How to handle sports injuries properly after they occur? This is a common concern for many parents and students. Once a sports injury occurs, if it does not receive timely and correct treatment, it is easy to cause irreversible damage to the function of the limb, which can affect our motor function or cause disability. So how should the correct disposal of sports injuries occur? In the acute phase of the injury, the first step to do is to brake the injured part, to prevent further stress stimulation damage too much, generally using a cast or brace fixed. Many people immediately after the injury to apply ointment, rubbing medicinal wine, such as safflower oil, etc., is wrong. Joint sprains and strains should be iced first, and topical medication should only be applied after 48 hours. After the injury should be kept long enough to rest, not too early to return to the sports field, to prevent old injuries are not healed and add new injuries. The most common misconception is not to take it seriously, hoping that you can get well and miss the best time for treatment. Sometimes there is no abnormality in the bone, so we think there is no problem, but we don’t know that MRI is needed to confirm the diagnosis of joint cartilage, ligament and tendon injuries, so when we suspect such injuries, we should follow the doctor’s instructions to perform MRI. The following are some of the most common joint sports injuries that are treated in clinical practice. Meniscal injuries The meniscus is a very important structure in the knee joint and acts as a spacer. Only the peripheral 1/3 of the meniscus receives blood supply from the synovium, while the central 2/3 has poor or no blood supply. Therefore, it is very difficult for the meniscus to repair itself once it has sustained a tear injury. The torn meniscus is constantly rubbed by the femur in the knee joint, which tends to increase the size of the tears on the one hand, and the uneven meniscus in turn wears down the cartilage on the surface of the femur on the other hand, resulting in osteoarthritis over time. At the same time, if the meniscus tear is too large, the torn part may even flip up and get stuck in the middle of the knee joint, causing severe pain and joint compression. Therefore, meniscal injuries that occur in the central 2/3 of the meniscus or where the tear is large and displaced should be treated early with arthroscopic surgery, while peripheral meniscal injuries that are not displaced can be treated conservatively with braking. Anterior Cruciate Ligament Injury The ACL plays a very important role in maintaining the stability of the knee joint. After an ACL injury, the stability of the knee joint is greatly affected. This instability can lead to wear and tear of the articular cartilage. At the same time, an unstable knee can become extremely fragile during strong confrontational sports such as soccer and basketball, which can lead to more serious injuries. Therefore, most ACL injuries require arthroscopic ligament reconstruction surgery. Patellar dislocation is insidious and can even be dislocated and reset in an instant. Patients just feel their knee sliding and it is easy to ignore it. If the dislocation is not reset on its own, the knee joint will be painful and swollen, so it needs to be reset in the hospital. If repeated dislocation, i.e. recurrent patellar dislocation, it is often related to the patient’s poorly developed femoral slide structure, poor patellar trajectory and poor lower limb rotation force line, etc., which requires surgery. Rotator cuff injury Rotator cuff injury often occurs at the humeral stop site, where blood flow is poor and it is difficult to heal on its own after injury. Eventually a huge rotator cuff rupture can cause severe functional impairment and unrelieved pain. The high water content of the collagen fibers of the rotator cuff in adolescents makes it unsuitable for injury, but it is prone to occur in adulthood, and the author has treated some rotator cuff injuries in college students. However, if the symptoms are not relieved after a period of conservative treatment or if the rotator cuff tear tends to increase in size, arthroscopic surgery should be performed. Shoulder Dislocation Shoulder dislocation is common in basketball, volleyball and other sports, and is easily combined with injury to the glenoid labrum ligament complex (Bankart injury), fracture of the anterior and inferior scapular glenoid (bony Bankart injury) and compression fracture of the humeral head (Hill-sach injury). The initial dislocation of the shoulder joint requires prompt manual repositioning, which should be performed under anesthesia. After repositioning, a mild external rotation position brace is required for 3 weeks to facilitate the healing of the glenoid labrum ligament tissue, after which shoulder mobility and muscle strength exercises are started. Early treatment is not standardized or adolescent shoulder dislocations are prone to recurrence, and often the second and subsequent dislocations become easier. Repeated dislocations will make the joint capsule more and more relaxed and easier to dislocate. Repeated and repeated shoulder dislocations are very damaging to the articular cartilage and cause fear to the patient’s psyche, so all recurrent dislocations require surgical treatment. Ankle sprains are very common in daily life, and many people consider them to be “minor injuries” and hope to get well on their own, thus delaying treatment. Ankle sprains can cause damage to the ligaments of the ankle joint, especially the lateral collateral ligaments, which are commonly caused by jumping and stepping on foreign objects, twisting violence after the mechanism of injury, and the tension of the ligaments is significantly weakened after the injury, which cannot maintain the stability of the ankle joint normally. Repeated ankle sprains can also damage joint cartilage and cause osteoarthritis. The initial acute sprain should be treated with pressure bandages, ice, rest and elevation of the affected limb; after the pain subsides, active ankle movement, gradual walking and muscle training should be performed. For patients with repeatedly broken feet and obvious ankle instability, timely surgery should be performed to repair the lateral collateral ligament. Through the above explanation, we can easily see that although the pain of sports injury will be relieved quickly, the damage to joint cartilage, ligaments and other structures is very difficult to be detected at first. Therefore, we hope that we can strengthen our awareness of sports protection, and once the injury has occurred, we should ask a professional sports medicine doctor to assess the condition and develop a scientific rehabilitation and treatment plan, so that we can get a better post-injury rehabilitation and return to the sports field with more confidence in the future.