Minimal-grade injuries is usually treated non-operatively, generally involving a short duration of arm sling usage to enable the injury to settle. Injections: corticosteroid injections can be administered to relieve pain and swelling. Productive for people with AC joint injury caused by arthritis. Twisting Actions: Sudden and forceful twisting motions or https://www.theorthopaedicandpainpractice.com/is-my-shoulder-pain-caused-by-an-acromio-clavicular-dislocation/?_gl=1*xbbxlb*_up*MQ..&gclid=Cj0KCQjwkt6aBhDKARIsAAyeLJ2krYJSOuy5mZksrNqH-VDjQwW1ScD49yD8BUWysDG6u6bJPCSbXVUaAuCPEALw_wcB