What is the jugular notch (incisura jugularis)?

The incisura jugularis, also known as the jugular notch or suprasternal notch, is a visible depression located at the superior border of the manubrium of the sternum, between the clavicular notches. This anatomical landmark is palpable at the base of the anterior neck, between the two clavicles (collarbones). It serves as an important reference point during physical examinations and medical procedures. The jugular notch is clinically significant as it corresponds to the level of the second thoracic vertebra posteriorly and marks the beginning of the superior mediastinum. Healthcare providers often use this landmark when performing procedures such as central venous catheter placement, when measuring chest dimensions, or when locating other thoracic structures. The depression is formed by the meeting of the manubrium with the clavicles and is covered only by skin and superficial fascia, making it easily identifiable on most individuals regardless of body habitus.