Preceding Dislocation: People who've experienced former dislocations are more susceptible to long term dislocations as a result of unstable shoulder joints. Posterior shoulder dislocation, in the event the humerus (head with the arm bone) is moved back and earlier mentioned the socket. This is an unheard of variety of dislocation https://www.theorthopaedicandpainpractice.com/what-are-shoulder-joint-dislocations/?_gl=1*164kc8h*_up*MQ..&gclid=Cj0KCQjwkt6aBhDKARIsAAyeLJ2krYJSOuy5mZksrNqH-VDjQwW1ScD49yD8BUWysDG6u6bJPCSbXVUaAuCPEALw_wcB