Sports injuries are the most common injuries With the improvement of living standards, the demand for health has become the primary requirement of daily life. The popularity of national fitness has brought accompanying problems: as most people exercise without specialized, systematic guidance, a variety of different parts of the sports injuries have emerged. Some people think they can get through it by continuing to persevere, but the result is that the injury is aggravated or even left disabled; some people are injured because of exercise or because the amount of exercise, the way is not grasped accurately resulting in the effect of fitness. This is the scope of sports medicine, sports medicine at first sounds not easy to understand, but this has been a specialized medical discipline carried out at home and abroad for more than 80 years. Dalian Second People’s Hospital, orthopedic hospital “sports injuries and arthroscopy department” Xu Xiaofeng, director of: often early is a small disease, early treatment can enhance sports results and performance; but delayed aggravation can have a big impact, such as some athletes appear sports injuries adhere to high-intensity training, but the results affect the sports performance, to When retired, injuries and illnesses affect health more. Understanding sports injuries Understanding sports medicine is a comprehensive applied science that combines medicine and sports. The study of medical issues related to sports, the use of medical knowledge and technology to sports participants to carry out medical supervision and guidance, so as to achieve the prevention and treatment of injuries and diseases, to protect the health of athletes, enhance physical fitness and improve sports performance. Content mainly includes: ① sports medical supervision. The study of the health status of athletes, athletic ability and its influencing factors, research and solve the prevention and treatment of sports diseases, the elimination of fatigue, sports and the environment, athletes selection, athletes self-monitoring and sports competition doping and other issues. ② sports injuries. Research on the laws of occurrence of sports injuries, mechanisms, prevention and control measures and post-injury rehabilitation training and other issues. ③ sports nutrition. Research on the rational use of food to meet the needs of the body to improve athletic ability. ④Medical sports. The study of the use of various sports means to prevent and treat injuries and diseases, especially the common diseases of sports therapy. This concept may seem complicated, but in fact, it is simply around the various joints where sports are performed: shoulder, elbow, wrist, hip, knee, ankle, and other intra-articular cartilage, meniscus, ligaments, synovial membrane and the related bones, muscles, tendons, and ligaments around these joints are treated by means of sports training, conservative treatment and minimally invasive surgery (such as arthroscopy, small incisions) to prevent and treat sports injuries, enhance physical fitness, and The goal is to prevent and treat sports injuries, enhance physical fitness, and improve sports performance. Sports Medicine and Arthroscopy Over the years, arthroscopy has been highly regarded by the medical community and accepted by patients for its minimally invasive features such as less damage, faster recovery, and accuracy of microscopic magnification surveillance. Arthroscopic technology is developing rapidly, and because sports injuries require rapid and effective recovery, the minimally invasive features of arthroscopy are adapted to this situation, thus arthroscopy is most closely related to sports injuries. Moreover, arthroscopy is not limited to joints, as its sub-4 mm lens transmits the microscopic view to a TV monitor through a fiber optic cable, magnifying the lesion several times and displaying it more clearly, and then treating it accurately with special instruments through several incisions less than 1 cm around the lesion; therefore, arthroscopy is not limited to joints, but is applicable to a wider range of fields outside joints, and can be used in sports medicine. It can be used in sports medicine. Not only that, but peri-articular disease is also very applicable. Sports injuries are most common in the knee joint, so arthroscopy was first used on the knee joint, and in order of ease of injury, the joints are the low back, shoulder, foot, ankle, thigh and hip hip, wrist, calf, and elbow. The lesions are diverse. The following are indications for arthroscopy: Shoulder: rotator cuff injury, biceps longus tendinitis, shoulder and acromioclavicular dislocation, multi-site bursitis, acromioclavicular impingement, shoulder glenoid labrum and cartilage injury, frozen shoulder, scapular osteochondroma, supraglenoid cyst, deltoid lipoma, deltoid birth injury fibrosis, scarring, etc. Elbow: osteoarthritis, osteochondritis, synovial chondromatosis, rheumatoid, heterotopic ossification, elbow stiffness, instability, free body, synovitis, radial microcephaly, etc. Wrist: triangular fibrocartilage injury, repositioning of distal radius fracture, tuberculosis, rheumatoid, wrist ligament injury, instability, osteoarthritis, osteochondritis, joint fusion, tendon sheath cyst, lunar osteonecrosis, etc. Hip: glenoid labrum, cartilage, garden ligament lesion, synovitis, free body, impingement syndrome, popping hip, femoral head necrosis, fatigue fracture, occult fracture, infection, degeneration, etc. Knee: including lesions of articular cartilage, meniscus, synovium, anterior and posterior cruciate ligaments, medial and lateral collateral ligaments; meniscal and cartilage graft, autologous allograft and artificial ligament reconstruction. Ankle and foot: ankle and subtalar joint lesions: osteoarthritis, synovitis, osteochondritis, free bodies, joint fusion, tenosynovitis, tenosynovial cysts, Achilles tendon terminal disease, tarsal sinus syndrome, etc.