1. Confirmation of diagnosis For patients suspected of joint dislocation, we should observe the pain, swelling, local deformity, etc. by “looking”; “touching”, i.e. to understand whether there is local pressure and pain in the joint? Is there a feeling of emptiness? Are there any abnormalities in the skeletal markings and interrelationships? “Move”, that is, to move the abnormal joint, to understand whether the joint has dysfunction? Is there elastic fixation phenomenon? If the above tests suspect a joint dislocation, you should go to the hospital to take X-rays as soon as possible to confirm the diagnosis. If there is no condition to take X-ray film for a while, as long as there is clinical manifestation of joint dislocation, it should be treated according to joint dislocation (see the relevant chapter in this book for details). 2. Reset For patients with confirmed joint dislocation, they should be reset in time. The earlier the time of resetting, the better the treatment effect and the easier the resetting, and the higher the success rate of resetting. If the dislocation is more than 2 weeks, the soft tissues around the joint become contracted or scarred, the reset is more difficult and the success rate of reset is also lower. There are two main methods of joint repositioning: (1) Manipulation repositioning The physician, through the analysis of the dislocation mechanism and the interpretation of the X-ray film, makes a well-designed manual repositioning plan. Then the dislocated joint is restored to normal joint surface by traction, pulling, folding, rotation, massage and other techniques. The sign of successful reset is that the active or passive activities of the limb or joint basically return to normal, the bony markings of the joint are restored, the pain or swelling of the joint is reduced or relieved, the local hollow feeling of the joint disappears, and the joint X-ray shows that the joint alignment is restored. (2) Surgical reset Patients with failed manual reset or old joint dislocation can be considered for surgical reset. The indications for surgical repositioning are intra-articular fracture dislocation (i.e., the fracture has destroyed the joint surface), and the joint surface still cannot be restored to normal after manual repositioning; there is soft tissue embedded in the joint surface after dislocation, and the manual repositioning has failed; the joint dislocation has damaged nerves and blood vessels and symptoms have appeared. Surgical repositioning should be carried out in a hospital with conditions, and will not be elaborated in this book. 3.Fixation Same as the treatment of fracture, after the completion of the reset, the joint should be fixed in a stable position for 2-4 weeks, in order to make the soft tissues around the joint repair in time to prevent habitual dislocation. The main methods of fixation are plaster fixation, small splint fixation and triangular scarf suspension fixation. For dislocation of some special parts, such as hip dislocation, traction fixation can be used under the guidance of physicians. 4.Functional exercise The purpose of functional exercise is to maximize the recovery of limb and joint function. During the fixation period, the main purpose is to do passive muscle activities, i.e. contraction and diastole of the muscles around the joint, in order to improve blood circulation, eliminate swelling, reduce muscle atrophy and slow down osteoporosis. After the immobilization, the active movement of the joint should be gradually restored, together with physiotherapy, hot compress and drug fumigation to promote the recovery of joint function.