The most common signs of joint dislocation are deformity, dysfunction, pain, and swelling, which are all signs of dislocation. For example, if the shoulder joint is dislocated, the special sign is square shoulder deformity, we do a shoulder hitch test, that is, we take the affected hand and put it on the shoulder, but the patient’s elbow can’t lean on the chest, but a normal person can lean on it, we call it a positive shoulder hitch test. If there is a positive test, it indicates a dislocation. For example, one of the more common joint dislocations is elbow dislocation, which also has unique deformities, such as a hollow pelvis and deformed joints. This is also the elastic fixation of the elbow joint. However, this type of joint dislocation can easily cause nerve damage, for example, elbow dislocation can easily cause ulnar nerve damage or radial nerve damage, resulting in numbness and immobility of the fingers, which is also a complication of dislocation. If the knee joint is stuck to the normal leg and fixed in one position, this is also one of the signs of dislocation; if it is posteriorly dislocated, it also has unique signs. Therefore, during the repositioning, we have to deal with the fracture according to the type of dislocation.