Sports injuries are classified as the top reason for posterior instability/ tears. They will often be witnessed in young active patients. Sports like excess weight-lifting, baseball, tennis or volleyball etcetera are typical causes of the injury. Frozen shoulder frequently progresses in 4 levels, With all the period of each stage https://www.theorthopaedicandpainpractice.com/is-my-shoulder-pain-caused-by-an-acromio-clavicular-dislocation/?_gl=1*xbbxlb*_up*MQ..&gclid=Cj0KCQjwkt6aBhDKARIsAAyeLJ2krYJSOuy5mZksrNqH-VDjQwW1ScD49yD8BUWysDG6u6bJPCSbXVUaAuCPEALw_wcB