Meniscus fractures usually have no sequelae if treated promptly and effectively, but if left untreated, they may leave sequelae such as deformity and forearm rotational dysfunction. Monsignor’s fracture is a combination of fracture of the upper 1/3 of the ulna and dislocation of the radial head, which can be caused by both direct and indirect violence. If the patient seeks medical treatment early and undergoes standardized reduction and immobilization treatment, the prognosis is generally good and will not leave sequelae. If not treated in time, wound infection may be induced, and complications such as osteofascial compartment syndrome and elbow stiffness may occur, which will increase the difficulty of treatment, and there is the possibility of deformity, forearm rotational dysfunction and other sequelae. Patients with Meng’s fracture should seek timely medical treatment and follow the doctor’s instructions for appropriate treatment, avoiding blind judgment on their own to avoid delaying their condition.