The infraspinatus muscle is one of the muscles that makes up the rotator cuff. It functions to laterally rotate the shoulder and to stabilize the shoulder joint. Rotator cuff problems are common and can be caused by both acute injuries, or chronic repeditive movements, and poor posture. When this happens trigger points will form causing pain, refered pain, as well as stiffness and weakness. Refered pain from trigger points in the infraspinatus can be felt into the front of the shoulder and down the arm. Trigger points can also produce a sensation the the shoulder joint isn’t “sitting right”. Trigger points must be released to relieve these symptoms.