Shoulder lock joint injury is an injury to the shoulder caused after trauma, and is a relatively common condition that may be caused by direct trauma to the shoulder joint or after propping the hand on the ground. After an injury to the acromioclavicular joint, appropriate treatment should be carried out according to the condition of the acromioclavicular joint injury, as follows: 1. For mild injuries, if there is only a little local pressure pain in the acromioclavicular joint and the protrusion is not obvious, you can usually fix the forearm in a sling and reduce the shoulder joint activity. For moderate injuries, it is usually necessary to choose the appropriate treatment according to the type of injury; 3. For severe injuries, surgery is usually required. There are many surgical methods. Currently, ligament reconstruction and ligament repair can be performed through arthroscopic techniques and minimally invasive techniques, which can achieve the treatment purpose of correcting shoulder lock joint dislocation and preserving shoulder joint movement.