Heart disease can potentially cause scapular pain.
Cardiac disease is usually caused by a temporary loss of balance between myocardial hypoxia and oxygen supply and myocardial ischemia. The pain is mainly located at the back of the sternum and may radiate to the jaw, mouth, back of the shoulder, and left upper extremity, and its main cause is the direct stimulation of local tissues after myocardial ischemia and hypoxia.