Interosseous sacroiliac ligament

Interosseous sacroiliac ligament
Details
Identifiers
Latin	ligamentum sacroiliacum interosseum
TA98	A03.6.03.003
TA2	1863
FMA	21467
Anatomical terminology [edit on Wikidata]

The interosseous sacroiliac ligament, also known as the axial interosseous ligament,^[1] is a ligament of the sacroiliac joint that lies deep to the posterior ligament. It connects the tuberosities of the sacrum and the ilium of the pelvis.

Structure

The interosseous sacroiliac ligament consists of a series of short, strong fibers connecting the tuberosities of the sacrum and ilium.^[1] It is one of the strongest ligaments in the body.^{[citation needed]}

Function

The major function of the interosseous sacroiliac ligament is to keep the sacrum and ilium together.^[2] This prevents abduction or distraction of the sacroiliac joint.^[2] It also helps to bear the weight of the thorax, upper limbs, head, and neck. This is performed by the nearly horizontal direction of the fibers running perpendicular from the sacrum to the ilium.

References

This article incorporates text in the public domain from page 308 of the 20th edition of Gray's Anatomy (1918)

^ ^a ^b Bechtel, Roy (July 2001). "Physical characteristics of the axial interosseous ligament of the human sacroiliac joint". The Spine Journal. 1 (4): 255–259. doi:10.1016/s1529-9430(01)00081-x. ISSN 1529-9430. PMID 14588329.
^ ^a ^b Benzon, Honorio T. (2005-01-01), Benzon, Honorio T.; Raja, Srinivasa N.; Molloy, Robert E.; Liu, Spencer S. (eds.), "Chapter 43 - Pain Originating from the Buttock: Sacroiliac Joint Dysfunction and Piriformis Syndrome", Essentials of Pain Medicine and Regional Anesthesia (Second Edition), Philadelphia: Churchill Livingstone, pp. 356–365, doi:10.1016/b978-0-443-06651-1.50047-2, ISBN 978-0-443-06651-1, retrieved 2021-02-17

External links

Diagram at anatomyatlases.org - Item #24

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