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3D OSTEOLOGY
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CLAVICLE ANATOMY

Author: Dr. Bogdan Leahu
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Clavicle anatomy 360-degree interactive viewer showing sternal end, body, acromial end, conoid tubercle, trapezoid line, and articular surfaces of the collarbone
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TABLE OF CONTENTS

CONNECTIONS

Medial (Inner) End

What does the medial end of the clavicle articulate with?

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

Lateral (Outer) End

What does the lateral end of the clavicle articulate with?

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

STERNAL END

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

What is the shape of the sternal end?

  • Triangular and tilts slightly inward

Features

What surface does the sternal end have?

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

Function

What is the function of the sternal end?

  • Ensures proper alignment with the disc

Rough Patch

What is the rough patch on the sternal end?

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

What are the characteristics of the clavicle body?

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

Groove for Subclavius Muscle

Where is the groove for the subclavius muscle?

  • Location: Underside of your clavicle
  • Function: Provides attachment for your subclavius muscle

ACROMIAL END

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

What are the features of the acromial end?

  • Small, flattened surface
  • Slopes slightly downward

Function

What does the acromial end articulate with?

  • Articulates with the acromion of your scapula

Acromial Facet

What is the acromial facet?

  • Flat surface for articulation with the acromion

Conoid Tubercle

What is the 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 (stabilizes your shoulder)

Trapezoid Line

What is the trapezoid line?

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

BIBLIOGRAPHY

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