There are mild and severe fractures of the elbow joint, and the elbow joint is divided into intra-articular and extra-articular fractures. Generally, extra-articular fractures, such as supracondylar fractures, radial tuberosity fractures, and extra-articular fractures may be relatively mild and have few complications. In the case of intra-articular fractures, such as ulnar eminence fractures, intercondylar fractures, medial epicondyle and lateral epicondyle fractures, they are relatively more serious if they involve the articular surface and are combined with neurological symptoms. Of course, the severity of the elbow fracture is also related to the treatment. The joint fracture must be strictly repositioned, that is, it must conform to the anatomical repositioning of the articular surface, in order to reduce the post-traumatic sequelae. In spite of this after treatment there will still be complications, especially in adolescents, because of the rapid growth and development, after the injury around the elbow joint is prone to ossifying myositis, that is, during the period of hematoma mechanization, it is easy to form periarticular calcification, which can cause joint adhesions and even ankylosis, affecting the flexion and extension activities of the elbow joint. If this occurs, it can cause more serious consequences.