Clavicle

Clavicle: Anatomy & FunctionKey facts about the anatomy of the clavicle
~ 3 min

The bones of the shoulder girdle (cingulum membri superioris) include the clavicle (clavicula) and the scapula (scapula).

Clavicle (clavicula)
Clavicle (clavicula)

The clavicle is a paired tubular bone located between the clavicular notch of the sternum and the acromion.

The clavicle has two surfaces:

  • Superior facet (facies superior)

Superior facet (facies superior)
Superior facet (facies superior)
  • Inferior facet (facies inferior)

    Inferior facet (facies inferior)
    Inferior facet (facies inferior)

    There are also three main parts:

  • Body of the clavicle (corpus claviculae)

    Body of the clavicle (corpus claviculae)
    Body of the clavicle (corpus claviculae)
  • Sternal end (extremitas sternalis)

    Sternal end (extremitas sternalis)
    Sternal end (extremitas sternalis)
  • Acromial end (extremitas acromialis)

    Acromial end (extremitas acromialis)
    Acromial end (extremitas acromialis)

    At the sternal end lies the sternal facet (facies articularis sternalis), which connects to the sternum (namely, the clavicular notch).

    And at the acromial end we can distinguish the acromial facet (facies articularis acromialis), which forms a joint with the acromion.

    Sternal facet (facies articularis sternalis)
    Sternal facet (facies articularis sternalis)
    Acromial facet (facies articularis acromialis)
    Acromial facet (facies articularis acromialis)

    On the inferior surface of the clavicle, there are several formations:

  • At the sternal end, there is the impression for the costoclavicular ligament (impressio ligamenti costoclavicularis)

    Impression for the costoclavicular ligament (impressio ligamenti costoclavicularis)
    Impression for the costoclavicular ligament (impressio ligamenti costoclavicularis)
  • At the acromial end there is the tuberosity for the coracoclavicular ligament (tuberositas ligamenti coracoclavicularis), which is divided into two component: the conoid tubercle (tuberculum conoideum), to which the conoid ligament is attached, and the trapezoid line (linea trapezoidea), to which the trapezoid ligament is attached

    These ligaments form the coracoclavicular ligament, which is present between the clavicle and the coracoid process of the scapula.

    Tuberosity for the coracoclavicular ligament (tuberositas ligamenti coracoclavicularis)
    Tuberosity for the coracoclavicular ligament (tuberositas ligamenti coracoclavicularis)
    Conoid tubercle (tuberculum conoideum)
    Conoid tubercle (tuberculum conoideum)
    Trapezoid line (linea trapezoidea)
    Trapezoid line (linea trapezoidea)
  • Furthermore, there is the subclavian groove (sulcus musculi subclavii) on the inferior surface of the body

Subclavian groove (sulcus musculi subclavii)
Subclavian groove (sulcus musculi subclavii)
Dictionary

Clavicle

cingulum membri superioris
shoulder girdle
clavicula
clavicle
scapula
scapula
facies superior
superior facet
facies inferior
inferior facet
corpus claviculae
body of clavicle
extremitas sternalis
sternal end
extremitas acromialis
acromial end
facies articularis sternalis
sternal facet
facies articularis acromialis
acromial facet
impressio ligamenti costoclavicularis
impression for costoclavicular ligament
tuberositas ligamenti coracoclavicularis
tuberosity for coracoclavicular ligament
tuberculum conoideum
conoid tubercle
linea trapezoidea
trapezoid line
sulcus musculi subclavii
subclavian groove
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