Bone
Sternum
Breastbone
High-yield
The sternal angle (of Louis) marks the 2nd costal cartilage, the T4/T5 disc, and the tracheal bifurcation. Site of bone marrow aspiration.
Overview
A flat bone in the anterior thoracic wall with three parts - manubrium, body, and xiphoid process - anchoring the ribs and clavicles.
Reference facts
- Bone type
- Flat
- Key landmarks
- Manubrium; Body; Xiphoid process; Sternal angle (of Louis); Jugular (suprasternal) notch; Clavicular notches
- Articulations
- Clavicles (sternoclavicular joints); Costal cartilages of ribs 1-7
Frequently asked questions
What type of bone is the sternum?
The sternum is a flat bone.
What does the sternum articulate with?
The sternum articulates with the clavicles (sternoclavicular joints); Costal cartilages of ribs 1-7.
What are the key landmarks of the sternum?
Key landmarks of the sternum include the manubrium; Body; Xiphoid process; Sternal angle (of Louis); Jugular (suprasternal) notch; Clavicular notches.