Intra-articular ligament of head of rib

Interarticular ligament
Costovertebral articulations. Anterior view. (Interarticular ligament labeled at lower left.)
Details
Identifiers
Latin	ligamentum capitis costae intraarticulare
TA	A03.3.04.004
FMA	8962
*Anatomical terminology* [edit on Wikidata]

The intra-articular ligament of head of rib (interarticular in older texts) is situated in the interior of the articulation of head of rib.

It consists of a short band of fibers, flattened from above downward, attached by one extremity to the crest separating the two articular facets on the head of the rib, and by the other to the intervertebral fibrocartilage; it divides the joint into two cavities.

In the joints of the first, tenth, eleventh, and twelfth ribs, the interarticular ligament does not exist; consequently, there is only one cavity in each of these articulations.

This ligament is the homologue of the ligamentum conjugale present in some mammals, and uniting the heads of opposite ribs, across the back of the intervertebral fibrocartilage.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

Joints and ligaments of torso

Vertebral

Syndesmosis

Of vertebral bodies	anterior longitudinal ligament posterior longitudinal ligament

Of vertebral arches	ligamenta flava supraspinous ligament nuchal ligament interspinous ligament intertransverse ligament

Symphysis

Synovial joint

Atlanto-axial	Medial: Cruciate ligament of atlas (Transverse ligament of atlas) Alar ligament Apical ligament of dens Tectorial membrane of atlanto-axial joint Lateral: no ligaments anterior atlantoaxial ligament posterior atlantoaxial ligament

Zygapophysial	no ligaments

Lumbosacral	iliolumbar ligament

Sacrococcygeal	anterior sacrococcygeal ligament posterior sacrococcygeal ligament

Thorax

Costovertebral

Head of rib	Radiate ligament Intra-articular ligament

Costotransverse	Costotransverse ligament Lumbocostal ligament

Sternocostal

Interchondral

no ligaments

Costochondral

no ligaments

Pelvis

Syndesmoses of pelvic girdle	Obturator membrane Obturator canal

Pubic symphysis	superior pubic ligament inferior pubic ligament

Sacroiliac	anterior sacroiliac ligament posterior sacroiliac ligament interosseous sacroiliac ligament ligaments connecting the sacrum and ischium: sacrotuberous ligament sacrospinous ligament

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Intra-articular ligament of head of rib

See also

References