4 Notes Clavicle

What is the Clavicle?

• The clavicle is commonly known as the collarbone.

• It forms a collar around the area where a t-shirt collar would sit.

• The clavicle is part of the pectoral girdle, alongside the scapula.

• It plays a critical role in connecting the upper limb to the trunk.

Primary Bony Landmarks of the Clavicle

• Conoid Tubercle:

  • Located on the bottom lateral third of the clavicle.

  • Serves as an attachment point for the conoid ligament, which is a part of the coracoclavicular ligament.

• Acromial End (Lateral End):

  • Articulates with the acromion of the scapula, forming the acromioclavicular joint.

• Sternal End (Medial End):

  • Articulates with the sternum, forming the sternoclavicular joint, which is structurally and functionally significant.

Function of the Clavicle

• Acts as a strut, providing rigid support to prevent the scapula and upper limb from collapsing onto the thorax.

• Transmits shocks or impacts from the upper limb to the axial skeleton, particularly during activities like handstands or falls.

• The clavicle's S-shaped structure increases its resiliency to forces.

Reasons to Learn About the Clavicle

• Understanding its anatomical landmarks and functions is crucial for diagnosing clavicular injuries (e.g., fractures).

• Knowledge of the clavicle helps in comprehending how the upper limb is connected to the trunk and its significance in the shoulder girdle's biomechanics.

• Recognizing common injuries such as clavicular fractures, which typically occur in the middle to lateral third of the bone, aids in appropriate treatment and stabilization strategies.