This is another common muscle to get trigger points. It originates on the spinous processes of the T2-T5 vertebrae. It inserts on the medial border of the scapula. It’s main actions are to adduct the scapula pulling it back toward the spine, and to rotate the glenohumeral joint downward. This muscle also prevents wining of the scapula. This muscle is often overloaded by a sitting posture where the shoulders are rolled forward such as when using a computer. The Rhomboids are often weak and under trained in people. Trigger points in this muscle cause pain and ache in the upper back between the shoulder blade. Strength trading for this muscle is necessary to help prevent postural overload.