The best way to sleep is by not exerting too much pressure on the shoulder. Refrain from sleeping on a hard surface or mattress. Place a pillow on the back of ​​your sore shoulder or elbow. This sleeping position is meant to relieve the affected shoulder temporarily. Try sleeping on the side of the shoulder that is fine and ot dislocated. Sleeping on the other side, you allow the “injured” shoulder to recover from minor injuries to the muscles and tendons.