What types of knee sports injuries are there? There are two types of injuries according to the degree of injury: minor injuries and serious injuries. Minor injuries mainly refer to tendonitis, bursitis, mild tendon or ligament injuries, for example, people who love jumping are prone to patellar tendonitis, people who love running or cycling are prone to iliotibial tract syndrome, greater trochanter bursitis, goose foot tendon bursitis, and volleyball games when suddenly bending the knee to catch the ball and then leaping up to snap the ball can easily strain the hamstring tendon. Chronic and acute injuries are classified according to the urgency of the injury, for example, the above-mentioned running injuries are mostly chronic injuries, while serious injuries are mostly acute. What is a serious injury to the knee? 1, cartilage injuries are divided into two types, one is the cartilage injury of the bone surface, and one is the meniscus injury (meniscus is also a kind of cartilage). 2, ligament injury knee joint has four (group) major ligaments, all vulnerable to injury. They are the anterior cruciate ligament (ACL); posterior cruciate ligament (PCL); medial collateral ligament (MCL); and lateral collateral ligament (LCL). 3, tendon muscle rupture for example patellar tendon rupture, quadriceps rupture. 4, Bone injuries are usually bone contusions and sometimes lead to complete fractures, such as patella fractures. 5, Other patellar dislocations, etc., are less likely to occur, but are also serious and complex injuries. What are the characteristics of a severe knee injury? Swelling, pain, and functional limitations are evident. In particular, swelling, and joint swelling, are the most critical features of a serious knee injury. A proper understanding of the type of knee sports injury is necessary to determine the injury with certainty and to help guide treatment and functional rehabilitation.