A dislocation happens when the head in the humerus (ball) pops out on the socket. This generally happens during Get hold of sports but could also arise from the traumatic injury for the shoulder. Muscle Imbalance: Muscle weaknesses or imbalances round the shoulder joint can boost the danger of instability. https://www.theorthopaedicandpainpractice.com/what-are-shoulder-joint-dislocations/?_gl=1*164kc8h*_up*MQ..&gclid=Cj0KCQjwkt6aBhDKARIsAAyeLJ2krYJSOuy5mZksrNqH-VDjQwW1ScD49yD8BUWysDG6u6bJPCSbXVUaAuCPEALw_wcB