A dislocation occurs when The top from the humerus (ball) pops out on the socket. This generally happens for the duration of Make contact with sports but could also manifest from a traumatic injury to your shoulder. Posterior shoulder dislocation, when the humerus (head of the arm bone) is moved https://www.theorthopaedicandpainpractice.com/what-are-shoulder-joint-dislocations/?_gl=1*164kc8h*_up*MQ..&gclid=Cj0KCQjwkt6aBhDKARIsAAyeLJ2krYJSOuy5mZksrNqH-VDjQwW1ScD49yD8BUWysDG6u6bJPCSbXVUaAuCPEALw_wcB