When your upper arm bone pops out of the socket that’s part of your shoulder blade, the shoulder becomes dislocated. This happens from a blow or a fall, like an injury during a contact sport or a car accident, or a fall from a ladder.
Most dislocations happen through the front of the shoulder. Once youai??i??ve dislocated your shoulder, youai??i??re more likely to do it again, especially if youai??i??re young and active.