The looseness is generally a results of repetitive overhead movement when swimming and playing tennis, for instance.  Former Dislocations: A history of former shoulder dislocations can boost the chance of recurrent episodes. 16 many years of experience in surgical and non-surgical strategies in sports accidents as being a Sports Orthopaedic https://www.theorthopaedicandpainpractice.com/what-are-shoulder-joint-dislocations/?_gl=1*164kc8h*_up*MQ..&gclid=Cj0KCQjwkt6aBhDKARIsAAyeLJ2krYJSOuy5mZksrNqH-VDjQwW1ScD49yD8BUWysDG6u6bJPCSbXVUaAuCPEALw_wcB