CLAVICLE ANATOMY

Clavicle anatomy 360-degree interactive viewer showing sternal end, body, acromial end, conoid tubercle, trapezoid line, and articular surfaces of the collarbone

Clavicle - General Overview, Preview from the app. Download 3D OSTEOLOGY for full 3D control—multiple views, x-ray mode, and unlimited zoom.

CONNECTIONS

Medial (Inner) End

  • Articulates with the manubrium of the breastbone
  • Forms the sternoclavicular joint with the articular disc

Lateral (Outer) End

  • Articulates with the acromion of the scapula (acromial end)

STERNAL END

Sternal end of clavicle 360-degree viewer showing triangular articular surface for sternoclavicular joint and costoclavicular ligament attachment site

Sternal End of the Clavicle, Preview from the app. Download 3D OSTEOLOGY for full 3D control—multiple views, x-ray mode, and unlimited zoom.

Shape

  • Triangular and tilts slightly inward

Features

  • Smooth, joint-like surface for articulation with the sternoclavicular disc

Function

  • Ensures proper alignment with the disc

Rough Patch

  • Location: Inner side, more than 2 cm in length
  • Function: Attachment point for the costoclavicular ligament
  • Role: Stabilizes the clavicle

BODY OF THE CLAVICLE

Body of clavicle 360-degree viewer showing double curvature, cylindrical medial portion, flattened lateral portion, and groove for subclavius muscle

Body of the Clavicle, Preview from the app. Download 3D OSTEOLOGY for full 3D control—multiple views, x-ray mode, and unlimited zoom.

Characteristics

  • Double curvature
  • Medial two-thirds: Cylindrical or prismoid shape
  • Outer third: Flattened

Groove for Subclavius Muscle

  • Location: Underside of the clavicle
  • Function: Provides attachment for the Subclavius muscle

ACROMIAL END

Acromial end of clavicle 360-degree viewer showing acromial facet, conoid tubercle, and trapezoid line for coracoclavicular ligament attachment

Acromial End of the Clavicle, Preview from the app. Download 3D OSTEOLOGY for full 3D control—multiple views, x-ray mode, and unlimited zoom.

Features

  • Small, flattened surface
  • Slopes slightly downward

Function

  • Articulates with the acromion of the scapula

Acromial Facet

  • Flat surface for articulation with the acromion

Conoid Tubercle

  • Location: Near the junction of the medial two-thirds and lateral third
  • Relation: Above the coracoid process of the scapula
  • Function: Attachment point for the conoid ligament (shoulder stability)

Trapezoid Line

  • Features:
    • Oblique ridge running forward and lateralward from the conoid tubercle
  • Function:
    • Provides attachment for the trapezoid ligament (stabilizes shoulder by connecting clavicle to scapula)

BIBLIOGRAPHY

1. Henry G, Warren HL. Osteology. In: Anatomy of the Human Body. 20th ed. Philadelphia: Lea & Febiger; 1918. p. 129–97.

⋮⋮ Clavicle Quiz
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