Where is the sternal angle located anatomically?

The sternal angle, also known as the angle of Louis, is anatomically located at the junction between the manubrium and the body of the sternum. This angle can be palpated as a notable landmark just below the clavicle, where the manubrium meets the body of the sternum at a slight upward angle. This anatomical feature is significant because it serves as a reference point for various important structures in the thorax, including the second rib, which articulates at this level. It is also useful for locating the intercostal spaces when performing physical examinations. Understanding the precise location of the sternal angle facilitates accurate assessments and interventions in clinical settings.