Teh Manubrium Of The Sternum, Posterior View

Description

Manubrium of the sternum is presented from a posterior (internal) thoracic perspective, emphasizing the gently concave surface that faces the mediastinum. Superiorly, the margin corresponds to the jugular notch, while the lateral borders widen toward the clavicular notches and the articular facets for the first costal cartilages. Inferiorly, the manubriosternal junction is apparent as a transverse interface with the sternal body, located just above the level of the second costal cartilage attachment. Subtle bony contours define muscle origins along the posterior manubrium, including sternohyoid and sternothyroid near the midline. This posterior view matters when you need to relate the upper sternum to the anterior mediastinum. Immediately deep to the manubrium lie clinically sensitive structures, including the left and right brachiocephalic veins and the superior mediastinal great vessels, so fractures or malpositioned sternal wires after median sternotomy can threaten vascular and airway-adjacent anatomy. The fixed internal perspective also supports correlation with axial CT and sagittal reconstructions, where the posterior sternal cortex and manubriosternal alignment are assessed for trauma, osteomyelitis, or postoperative complication. Depth cues and crisp cortical edges make the hollowed internal plate easy to distinguish from the more irregular costal attachment zones. A compact landmark. Use this illustration in thoracic anatomy teaching, cardiothoracic surgery references discussing sternotomy and closure, and radiology materials covering sternal trauma and manubriosternal dislocation. It also fits well in patient-facing educational graphics that need an accurate breastbone (sternum) surface without overloading surrounding organs. Anatomical accuracy verified by SciePro's Medical Advisory Board.