Sternum Anatomy

Introduction

• Sternum: Bone in the center of the chest, sword-shaped.
• Purpose: This tutorial covers the anatomy of the sternum.

Overview of the Sternum

• Structure: Long flat bone in the front of the rib cage.
• Parts: Made up of three parts:
  • Manubrium
  • Sternal body
  • Xiphoid process
• Function: Joins right and left ribs, provides base for the pectoral girdle.

Parts of the Sternum

Manubrium

• Location: Most superior portion of the sternum.
• Shape: Triangle-like, base in line with clavicles.
• Notches:
  • Suprasternal (jugular) notch: Central depression at the base.
  • Clavicular notches: On either side of the suprasternal notch; contribute to sternoclavicular joints.

Sternal Body

• Features: Contains multiple costal notches for rib attachment.
  • Notches named after rib numbers (third, fourth, fifth, sixth, seventh costal notches).

Xiphoid Process

• Note: Covered at a basic level, part of the sternum.

Articulations

• Sternal Angle: Junction between manubrium and sternal body.
• Xiphysternal Junction: Junction between sternal body and xiphoid process.

Bony Landmarks

• Manubrium:
  • Suprasternal notch
  • Clavicular notches
  • First and second costal notches
• Sternal Body: Multiple rib-attaching notches (third to seventh)

Clinical Notes

• Importance of sternum in clinical context (details not provided).

Conclusion

• For more detailed anatomy, quizzes, articles, and atlas sections, refer to kenhub.com. Full-length videos available for premium members.