Traumatic joint dislocations mostly occur in joints with a large range of motion, weak joint capsule and surrounding ligaments, and structural instability. In the extremities, shoulder and elbow joints are common, while knee joints are rare, and trauma only causes ligament tears. Joint dislocations are often accompanied by tears of the joint capsule and sometimes fractures. Adult dislocations of large joints, especially complete dislocations, have clear signs and are not difficult to diagnose clinically, but X-ray examination is still needed to understand the dislocation and the presence of concurrent fractures, which is important for repositioning treatment. In adult small joint dislocation and joint dislocation with incomplete ossification of the epiphysis, especially incomplete dislocation, the X-ray signs are not clear and the diagnosis is more difficult, and it is often necessary to compare with the healthy side to confirm the diagnosis. The dislocation of each joint has a certain direction of dislocation due to the anatomical characteristics of different joints and the nature and direction of trauma. The following are the common joint dislocations: 1. Shoulder dislocation The shoulder joint has the largest range of motion, the scapular pelvis is shallow, and the joint capsule and ligaments are loose and weak, so it is easy to dislocate due to trauma. There are two types of dislocation: anterior dislocation of the humeral head, and anterior dislocation is common. When the humeral head is dislocated anteriorly, it is often displaced downward at the same time and is located below the scapular glenoid, which is called subglenoid dislocation. It can also be displaced upward and located below the rostral process or in the subclavian division, which is called sub rostral or subclavian dislocation, respectively. Shoulder dislocations are often complicated by fractures of the greater tuberosity of the humerus or the humeral neck. Posterior dislocation of the humeral head is rare, and only in lateral position can the humeral head be found posterior to the scapular glenoid, which is easily missed in orthogonal position. 2. Elbow dislocation is more common, mostly caused by elbow hyperextension, and is often posterior dislocation. The ulnar and radial ends are dislocated to the posterior side of the humerus at the same time, and the ulnar hallux valgus is dislocated from the humeral talus. Rarely, the dislocation may be lateral, with the ulna and radius displaced laterally. Elbow dislocation is often complicated by fracture. Injuries to the joint capsule and ligaments can be severe and can be complicated by vascular and nerve injuries. There are two ways to treat a dislocated shoulder: The first method is traction and massage. This method requires three people to work together. The patient sits down, one assistant holds the affected armpit with both hands, the other assistant holds the patient’s wrist and abducts the affected limb by 30-40 degrees, the two assistants pull and tug, and slowly externally rotate the affected limb, the operator holds the shoulder with both hands and pushes the humeral head toward the glenoid to reset it. The other is the foot stirrup method, which is suitable for cases with few hands. The patient lies supine on the side of a low bed, the rescuer stands on the affected side of the patient, holds the forearm of the affected limb with both hands, stirrups with the heel of the foot (right foot for right side dislocation, left foot for left side dislocation) in the axilla of the dislocation, the rescuer uses the foot stirrups while pulling the affected limb, and slowly rotates the upper arm outward to reset. After resetting, the forearm is held up with a triangular towel and the upper arm is fixed to the chest wall with a bandage for 3 weeks. If the above methods are unsuccessful, the patient should be sent to a regular specialist hospital for treatment. Elbow dislocation: The patient is in a sitting position, and the assistant holds the upper arm for antagonistic traction. The therapist holds the patient’s wrist with one hand and keeps traction in the direction of the original deformity, while the palm of the other hand pushes the lower end of the humerus backward from the front of the elbow, and the remaining four fingers behind the elbow lift the eminence forward to reset the elbow joint. In case of elbow dislocation, if there is no rescuer in front of the elbow, the injured person should not forcibly straighten the injured limb in a semi-extended position to avoid causing more injury if the injury is judged to be a joint dislocation according to the condition of the elbow joint. You can unbutton the arm on the healthy side, put the lapel from the bottom up to the forearm of the injured limb, tie it on the collar, so that the injured limb elbow joint is fixed in a semi-flexed position in the front chest, and then go to the hospital for treatment. If someone rescue, if the rescuer is not very familiar with the bone, can not determine whether the joint dislocation combined with fracture, do not easily implement the method of elbow dislocation reset, in order to prevent injury to blood vessels and nerves, the injured limb can be suspended in a semi-flexed position fixed in the front chest with a triangular towel, and sent to the hospital.